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 A174852 #2 Mar 30 2012 18:53:09 %S A174852 1,1,1,1,0,1,0,1,0,1,1,0,0,0,1,1,1,1,0,0,1,1,0,0,0,0,0,1,1,1,0,1,0,0, %T A174852 0,1,0,0,1,0,0,0,0,0,1,1,1,0,0,1,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,1,1, %U A174852 1,1,0,1,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,1,0,0,0,0,0,0,1 %N A174852 Triangle T(n,k) read by rows. T(1,1)=1, n>1 T(n,1)=A049240, k>1 T(n,k)=A051731. %C A174852 Except for the first term the first column is equal to A049240. The rest of the table equals A051731. The first column = 0 when n is a square greater than 1. %e A174852 Table begins: %e A174852 1, %e A174852 1,1, %e A174852 1,0,1, %e A174852 0,1,0,1, %e A174852 1,0,0,0,1, %e A174852 1,1,1,0,0,1, %e A174852 1,0,0,0,0,0,1, %e A174852 1,1,0,1,0,0,0,1, %e A174852 0,0,1,0,0,0,0,0,1, %e A174852 1,1,0,0,1,0,0,0,0,1, %Y A174852 Cf. A174854. %K A174852 nonn,tabl %O A174852 1,1 %A A174852 _Mats Granvik_, Mar 31 2010