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 A192467 #7 Nov 12 2012 09:13:53 %S A192467 1,3,12,45,176,693,2752,10965,43776,174933,699392,2796885,11186176, %T A192467 44741973,178962432,715838805,2863333376,11453289813,45813071872, %U A192467 183252112725,733008101376,2932031706453,11728125427712,46912498914645,187649990066176 %N A192467 (A192466)/2. %C A192467 See A192466. %F A192467 Empirical G.f.: -x*(x^2-3*x+1)/((x-1)*(x+1)*(2*x-1)*(4*x-1)). [_Colin Barker_, Nov 12 2012] %e A192467 (See A192466.) %t A192467 (See A192465.) %Y A192467 Cf. A192466. %K A192467 nonn %O A192467 1,2 %A A192467 _Clark Kimberling_, Jul 01 2011