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 A130051 #2 Mar 30 2012 18:57:10 %S A130051 0,6,17,32,51,72,97,127,161,197,236,279,327,378,432,489,550,614,681, %T A130051 751,826,906,989,1074,1162,1252,1347,1445,1546,1650,1759,1870,1986, %U A130051 2105,2227,2352,2480,2611,2745,2884,3026,3171,3319,3470,3624,3781,3943,4108 %N A130051 A bisection of A120049. %C A130051 The other bisection is A130050; both bisections are strictly increasing. %F A130051 a(n)=b(2n-1), for n>=1, where b=A130049. %e A130051 A130049 = (0,3,6,7,17,12,32,20,51,29,72,...), so that %e A130051 A130051 = (0,6,17,32,51,72,...). %Y A130051 Cf. A130048, A130049, A130050. %K A130051 nonn %O A130051 1,2 %A A130051 _Clark Kimberling_, May 03 2007