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 A128262 #5 Feb 18 2022 22:10:41 %S A128262 1,3,2,1,3,3,3,2,4,4,1,0,0,5,5,3,5,3,0,6,6,1,0,0,0,0,7,7,3,2,4,4,0,0, %T A128262 8,8,1,3,3,0,0,0,0,9,9,3,2,0,5,5,0,0,0,10,10 %N A128262 Inverse Moebius transform of A127899 (unsigned). %C A128262 Row sums = A002659: (1, 5, 7, 13, 11, 23, 15, 29, ...). %F A128262 A051731 * unsigned A127899 as infinite lower triangular matrices. %e A128262 First few rows of the triangle: %e A128262 1; %e A128262 3, 2; %e A128262 1, 3, 3; %e A128262 3, 2, 4, 4; %e A128262 1, 0, 0, 5, 5; %e A128262 3, 5, 3, 0, 6, 6; %e A128262 1, 0, 0, 0, 0, 7, 7; %e A128262 ... %Y A128262 Cf. A051731, A127899, A002659. %K A128262 nonn,tabl %O A128262 1,2 %A A128262 _Gary W. Adamson_, Feb 21 2007