This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A179807 #7 Dec 10 2016 17:07:07 %S A179807 1,1,2,3,5,9,17,34,71,153,337,755,1713,3925,9064,21065,49213,115477, %T A179807 271961,642495,1521899,3613189,8595037,20480600,48874131,116781789, %U A179807 279358063,668925263,1603145325,3845056065,9228442541,22162387821 %N A179807 Antidiagonal sums of A175105. %C A179807 The ratio a(n+1)/a(n) tends to 1 + sqrt(2), A014176. %Y A179807 Cf. A175105, A002193. %K A179807 nonn %O A179807 1,3 %A A179807 _Mats Granvik_, Jul 28 2010