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 A033554 #7 Oct 03 2016 10:37:33 %S A033554 1,2,3,4,8,248,731,1333,1533,2583,2847,3503,4161,4251,4947,4983,5355, %T A033554 5715,6141,7503,8103,9435,9513,9831,10923,12291,13107,14043,17608, %U A033554 17889,20853,23871,25443,27795,29127,29319,29643,30783,32235,33915,34323,35003 %N A033554 In A015922, not in A033553. %K A033554 nonn %O A033554 1,2 %A A033554 _David W. Wilson_ %E A033554 Terms 1, 2, 3, 4, 8 prepended by _Max Alekseyev_, Oct 03 2016