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 A035530 #5 Jul 08 2025 21:33:54 %S A035530 1,2,4,9,20,44,97,212,455,961,2014,4219,8863,18662,39298,82584,173008, %T A035530 361321,752823,1566271,3256418,6768409,14064705,29213846,60634364, %U A035530 125706899,260227836,537737396,1108954613 %N A035530 Binomial transform of A003603. %K A035530 nonn %O A035530 0,2 %A A035530 _N. J. A. Sloane_