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 A027179 #6 Jan 09 2024 12:02:21 %S A027179 1,3,15,26,81,130,350,558,1417,2282,5632,9190,22296,36834,88280, %T A027179 147422,349929,589786,1388672,2359254,5516356,9437138,21931190, %U A027179 37748686,87250096,150994890,347306730,603979718,1383135310,2415919042 %N A027179 a(n) = T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A027170. %K A027179 nonn %O A027179 0,2 %A A027179 _Clark Kimberling_