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 A178888 #6 Jan 21 2019 14:42:08 %S A178888 1,2,2,3,6,6,4,12,12,24,24,5,20,20,60,60,120,120,6,30,30,30,120,120, %T A178888 120,360,360,720,720,7,42,42,42,210,210,210,210,840,840,840,2520,2520, %U A178888 5040,5040,8,56,56,56,56,336,336,336,336,336,1680,1680,1680,1680,1680,6720,6720,6720,20160,20160 %N A178888 Irregular table A035206(n,k)*A096162(n,k), read by rows. %e A178888 A035206 begins 1 2 1 3 6 1 4 12 6 12 1 ... %e A178888 A096162 begins 1 1 2 1 1 6 1 1 2 2 24 ... %e A178888 therefore %e A178888 A178888 begins 1 2 2 3 6 6 4 12 12 24 24 ... %e A178888 with row sums 1,4,15,76,405,2616,18613,151432,1367649...A178887 %Y A178888 Cf. A035206, A096162, A178887 (row sums). %K A178888 easy,nonn,tabf %O A178888 1,2 %A A178888 _Alford Arnold_, Jun 21 2010