mscroggs.co.uk
mscroggs.co.uk

subscribe

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.
@(anonymous): Hi Seth, sorry, I forgot to put my name on my post. I hope it was useful!
Ryan
on /blog/107
               
@Ryan: Got it! I like your method -- just keep eliminating square numbers until you're left with what you need.

I still wanted to figure out why my original method was wrong. And it finally dawned on me:
My mistake was not realizing that my answer of 241 was just a lower bound. The value of n needed to be AT LEAST 241, because my analysis said that 241 needed to be divided out. But any number >241 would also do the job of dividing out 241. So I needed to think about higher numbers too.
Seth Cohen
on /blog/107
×1   ×2   ×1   ×1   ×1   
@Seth Cohen: Even with those hints I just can't seem to get this one!
Steve
on /blog/107
×6   ×6   ×6   ×6   ×6   

Archive

Show me a random blog post
 2025 

Mar 2025

How to write a crossnumber

Jan 2025

Christmas (2024) is over
Friendly squares
 2024 
▼ show ▼
 2023 
▼ show ▼
 2022 
▼ show ▼
 2021 
▼ show ▼
 2020 
▼ show ▼
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

arithmetic crossnumbers pac-man royal baby london underground dinosaurs rhombicuboctahedron hexapawn standard deviation talking maths in public live stream graph theory squares curvature logo zines exponential growth weather station chalkdust magazine logic matrix multiplication programming bots determinants books golden spiral fonts gerry anderson matrix of cofactors dataset draughts numerical analysis latex national lottery crochet statistics python turtles game of life polynomials propositional calculus pi correlation crossnumber a gamut of games christmas preconditioning radio 4 finite element method stickers stirling numbers logs gather town bempp craft friendly squares noughts and crosses youtube matrices martin gardner world cup pascal's triangle captain scarlet oeis sorting edinburgh inverse matrices manchester simultaneous equations pi approximation day braiding chess realhats christmas card regular expressions cambridge bubble bobble countdown platonic solids error bars wave scattering finite group databet fractals php speed approximation coins raspberry pi bodmas accuracy final fantasy weak imposition javascript misleading statistics ternary go quadrilaterals binary inline code games trigonometry hyperbolic surfaces signorini conditions machine learning rugby sobolev spaces data visualisation errors probability manchester science festival tennis mathsjam video games big internet math-off news crosswords game show probability harriss spiral convergence kings asteroids triangles graphs folding tube maps folding paper dragon curves mean guest posts 24 hour maths fence posts phd european cup reuleaux polygons numbers dates advent calendar mathsteroids chebyshev sport matrix of minors anscombe's quartet wool electromagnetic field puzzles computational complexity football london flexagons hats ucl interpolation tmip boundary element methods sound geometry people maths geogebra cross stitch data menace mathslogicbot gaussian elimination golden ratio light pythagoras royal institution reddit recursion nine men's morris frobel hannah fry newcastle palindromes estimation the aperiodical pizza cutting map projections matt parker datasaurus dozen runge's phenomenon plastic ratio

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2025