mscroggs.co.uk

mscroggs.co.uk

blog puzzles academic talks contact subscribe

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.

2020-01-02

It's interesting that the three puzzles with the most incorrect attempts can all be looked up on OEIS.

Day 15 - https://oeis.org/A001055 - "number of ways of factoring n with all factors greater than 1"

Day 4 - https://oeis.org/A001045 - "number of ways to tile a 2 Ã— (n-1) rectangle with 1 Ã— 2 dominoes and 2 Ã— 2 squares"

Day 2 - https://oeis.org/A002623 - "number of nondegenerate triangles that can be made from rods of length 1,2,3,4,...,n"

Adam Abrams
on /blog/72

×1

Archive

Show me a random blog post

2024

Feb 2024

Jan 2024

Christmas (2023) is over

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2024