# Blog

**2017-11-28**

## Christmas (2017) is coming!

Showing all comments about the post Christmas (2017) is coming!. To return to the blog post, click here.

### Comments

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

**2017-12-24**

Just for info (clarification?): I read question on 22nd as

22 is two times an odd number. Today's number is the mean of all the answers, on days (including today), that are two times an odd number."

Note my added commas. I was averaging the answers, not the dates. Certainly ambiguous as far as I am concerned.

Only fixed it by 'cheating'. Trying best guessses of averages until I got the correct one.

**2017-12-24**

I can tell you that the number of combinations of n As and Bs which contain at at least one uninterrupted sequence of 3 As is 2^n - F3(n+3) where F3 is the fibonaccia variant adding 3 numbers (1,1,2,4,7,13,24 etc.).

Only took me about 8 hours (with some small help form OEIS for the 2 As problem)

**2017-12-15**

**2017-12-13**

**2017-12-13**

**2017-12-10**

**2017-12-07**

**Add a Comment**

2017-12-27Matthew