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 A143470 #13 Aug 27 2023 10:18:31 %S A143470 1,3,1,7,1,1,11,3,1,1,19,3,1,1,1,23,7,3,1,1,1,35,7,3,1,1,1,1,43,11,3, %T A143470 3,1,1,1,1,55,11,7,3,1,1,1,1,1,63,19,7,3,3,1,1,1,1,1,83,19,7,3,3,1,1, %U A143470 1,1,1,1,91,23,11,7,3,3,1,1,1,1,1,1,115,23,11,7,3,3,1,1,1,1,1,1,1 %N A143470 Triangle read by rows, A000012 * A143316, 1 <= k <= n. %C A143470 Sum of n-th row is n^2. %C A143470 Duplicate of A242114. %F A143470 Triangle read by rows, A000012 * A143316, 1 <= k <= n, where the operation A000012 * A143316 takes partial sums of A143316 terms by columns. %e A143470 First few rows of the triangle: %e A143470 1; %e A143470 3, 1; %e A143470 7, 1, 1; %e A143470 11, 3, 1, 1; %e A143470 19, 3, 1, 1, 1; %e A143470 23, 7, 3, 1, 1, 1; %e A143470 35, 7, 3, 1, 1, 1, 1; %e A143470 ... %Y A143470 Cf. A143316, A242114. %K A143470 dead %O A143470 1,2 %A A143470 _Gary W. Adamson_, Aug 17 2008 %E A143470 a(28) = 1 inserted by _Georg Fischer_, Aug 18 2023