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 A077161 #2 Dec 05 2013 19:55:49 %S A077161 2,3,7,15,16,31,27,45,49,73,62,103,86,129,133,163,146,217,178,251,248, %T A077161 293,262,359,316,399,386,461,418,569,472,585,580,657,634,761,675,813, %U A077161 796,911,830,1039,908,1083,1072,1171,1088,1313,1192,1399,1334,1489,1382 %N A077161 Final terms of rows of triangle in A077159. %Y A077161 Cf. A077159, A077160, A077162. %K A077161 easy,nonn %O A077161 1,1 %A A077161 _Amarnath Murthy_, Oct 31 2002 %E A077161 More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 23 2003