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 A127372 #8 Feb 14 2022 21:22:30 %S A127372 1,3,0,3,1,0,6,0,1,0,3,1,1,1,0,9,2,0,0,1,0,3,1,1,1,1,1,0,10,0,3,0,1,0, %T A127372 1,0,6,3,0,1,1,0,1,1,0,9,2,3,2,0,0,1,0,1,0 %N A127372 Triangle read by rows: A127170 * A054521 as infinite lower triangular matrices. %C A127372 Left column = A007425, (tau_3(n)): 1, 3, 3, 6, 3, 9, ... Row sums = sigma(n), A000203: 1, 3, 4, 7, 6, 12, ... %e A127372 First few rows of the triangle: %e A127372 1; %e A127372 3, 0; %e A127372 3, 1, 0; %e A127372 6, 0, 1, 0; %e A127372 3, 1, 1, 1, 0; %e A127372 9, 2, 0, 0, 1, 0; %e A127372 3, 1, 1, 1, 1, 1, 0; %e A127372 10, 0, 3, 0, 1, 0, 1, 0; %e A127372 ... %Y A127372 Cf. A127170, A054521, A000203, A007425. %K A127372 nonn,tabl %O A127372 1,2 %A A127372 _Gary W. Adamson_, Jan 12 2007 %E A127372 Edited by _N. J. A. Sloane_, Jul 11 2008