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 A151677 #2 Mar 30 2012 16:51:03
%S A151677 2,3,4,6,11,3,6,10,11,19,6,6,11,8,14,15,11,19,15,26,36,3,6,10,11,19,8,
%T A151677 12,21,19,33,21,11,19,15,26,36,19,33,32,49,76,8,6,11,8,14,15,11,19,15,
%U A151677 26,36,8,14,17,23,40,16,26,38,42,73,28,11,19,15,26,36,19,33,32,49,76,17,26,38
%N A151677 a(n) = sum_{k >= 0} binomial(3*wt(n+k),k), where wt() = A000120().
%C A151677 Suggested by Hagen von Eitzen's formula for A160573.
%K A151677 nonn
%O A151677 0,1
%A A151677 _N. J. A. Sloane_, Jun 01 2009