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 A152434 #5 Jun 02 2025 01:14:29 %S A152434 1,1,1,1,0,2,1,1,0,3,1,0,0,0,5,1,1,1,2,0,0,6,1,0,0,0,0,0,10,1,1,0,3,0, %T A152434 0,0,11,1,0,2,0,0,0,0,0,16,1,1,0,0,5,0,0,0,0,19,1,0,0,0,0,0,0,0,0,0, %U A152434 26,1,1,2,3,0,6,0,0,0,0,0,27 %N A152434 Triangle read by rows, A051731 * (A003238 * 0^(n-k)). %C A152434 Row sums = A003238(n+1) %F A152434 Triangle read by rows, A051731 * (A003238 * 0^(n-k)). A051731 = the inverse %F A152434 Mobius transform. %e A152434 First few rows of the triangle = %e A152434 1; %e A152434 1, 1; %e A152434 1, 0, 2; %e A152434 1, 1, 0, 3; %e A152434 1, 0, 0, 0, 5; %e A152434 1, 1, 2, 0, 0, 6; %e A152434 1, 0, 0, 0, 0, 0, 10; %e A152434 1, 1, 0, 3, 0, 0, 0, 11; %e A152434 1, 0, 2, 0, 0, 0, 0, 0, 16; %e A152434 1, 1, 0, 0, 5, 0, 0, 0, 0, 19; %e A152434 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 26; %e A152434 1, 1, 2, 3, 0, 6, 0, 0, 0, 0, 0, 27; %e A152434 ... %e A152434 Row 4 = (1, 1, 0, 3) = termwise products of (1, 1, 0, 1) and (1, 1, 2, 3) %Y A152434 A051731, A003238 %K A152434 nonn,tabl %O A152434 1,6 %A A152434 _Gary W. Adamson_, Dec 04 2008