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 A138015 #9 Apr 02 2022 14:22:35 %S A138015 1,1,1,1,2,1,1,2,2,1,1,2,4,2,1,1,2,4,4,2,1,1,2,4,10,4,2,1,1,2,4,10,10, %T A138015 4,2,1,1,2,4,10,34,10,4,2,1,1,2,4,10,34,34,10,4,2,1,1,2,4,10,34,154, %U A138015 34,10,4,2,1,1,2,4,10,34,154,154,34,10,4,2,1 %N A138015 Triangle read by rows, antidiagonals of an array formed by A000012 * A136579. Replace the term "n" in the correlation triangle A003983 with A003422(n). %C A138015 A003422 = (0, 1, 2, 4, 10, 34, 154, ...). %C A138015 Row sums = A138016: (1, 2, 4, 6, 10, 14, 24, 34, 68, 102, ...). %e A138015 First few rows of the triangle: %e A138015 1; %e A138015 1, 1; %e A138015 1, 2, 1; %e A138015 1, 2, 2, 1; %e A138015 1, 2, 4, 2, 1; %e A138015 1, 2, 4, 4, 2, 1; %e A138015 1, 2, 4, 10, 4, 2, 1; %e A138015 1, 2, 4, 10, 10, 4, 2, 1; %e A138015 1, 2, 4, 10, 34, 10, 4, 2, 1; %e A138015 1, 2, 4, 10, 34, 34, 10, 4, 2, 1; %e A138015 ... %Y A138015 Cf. A136579, A138016, A003983, A003422. %K A138015 nonn,tabl %O A138015 1,5 %A A138015 _Gary W. Adamson_, Feb 28 2008 %E A138015 Example corrected by _Philippe Deléham_, Feb 18 2013