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 A178802 #14 Jul 09 2023 18:27:59 %S A178802 1,1,2,2,6,12,6,24,48,24,72,24,120,240,240,360,360,480,120,720,1440, %T A178802 1440,720,2160,4320,720,2880,4320,3600,720,5040,10080,10080,10080, %U A178802 15120,30240,15120,15120,20160,60480,20160,25200,50400,30240,5040,40320,80640,80640,80640,40320,120960 %N A178802 Multiply, cell by cell, sequence A048996 by A178801. %F A178802 T(n,k) = A048996(n,k) * A178801(n,k) = A048996(n,k) * n!. %e A178802 A048996 begins 1,1,1,1,1,2,1, 1, 2, 1, 3, 1 ... %e A178802 A178801 begins 1,1,2,2,6,6,6,24,24,24,24,24,... %e A178802 therefore %e A178802 a(n) begins 1,1,2,2,6,12,6,... %e A178802 with row sums 1, 1, 4, 24, 192, 1920, 23040, ... . %e A178802 Triangle begins: %e A178802 1; %e A178802 1; %e A178802 2, 2; %e A178802 6, 12, 6; %e A178802 24, 48, 24, 72, 24; %e A178802 120, 240, 240, 360, 360, 480, 120; %e A178802 720, 1440, 1440, 720, 2160, 4320, 720, 2880, 4320, 3600, 720; %e A178802 ... %Y A178802 Cf. A000041, A000142, A048996, A178801, A002866 (row sums). %K A178802 easy,nonn,tabf %O A178802 0,3 %A A178802 _Alford Arnold_, Jun 15 2010