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 A155099 #5 Jan 20 2025 22:44:50 %S A155099 1,1,2,4,7,14,27,54,106,212,420,840,1673,3346,6678,13356,26685,53370, %T A155099 106686,213372,426638,853276,1706340,3412680,6824940,13649880, %U A155099 27298920,54597840,109194007,218388014,436772682,873545364,1747084050,3494168100,6988322844,13976645688 %N A155099 Third column of A155092. %K A155099 nonn %O A155099 1,3 %A A155099 _Mats Granvik_, Jan 20 2009 %E A155099 More terms from _Jinyuan Wang_, Jan 19 2025