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 A151714 #4 Mar 30 2012 17:39:46 %S A151714 1,1,2,2,2,3,4,3,2,3,4,4,5,7,7,4,2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,5,2, %T A151714 3,4,4,5,7,7,5,5,7,8,9,12,14,11,6,5,7,8,9,12,14,12,10,12,15,17,21,26, %U A151714 25,16,6,2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,6,5,7,8,9,12,14,12,10,12,15,17,21,26 %N A151714 When A151552 is written as a triangle the rows converge to this. %F A151714 a(n)=A151553(n-1), n>0. [From _R. J. Mathar_, Jul 07 2009] %e A151714 Contribution from _Omar E. Pol_, Jun 09 2009: (Start) %e A151714 Triangle begings: %e A151714 1; %e A151714 1; %e A151714 2,2; %e A151714 2,3,4,3; %e A151714 2,3,4,4,5,7,7,4; %e A151714 2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,5; %e A151714 2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,6,5,7,8,9,12,14,12,10,12,15,17,21,26,25,16,6; %e A151714 2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,6,5,7,8,9,12,14,12,10,12,15,17,21,26,... %e A151714 (End) %p A151714 G := 1 + x*(1+x)*mul( 1 + x^(2^n-1) + x^(2^n), n=1..20); %Y A151714 Cf. A151552m A151553, A000079. %K A151714 nonn %O A151714 0,3 %A A151714 _N. J. A. Sloane_, Jun 08 2009