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 A143308 #11 Jul 05 2023 04:33:25 %S A143308 1,4,2,6,3,3,12,8,4,4,10,5,5,5,5,24,18,12,6,6,6,14,7,7,7,7,7,7,32,24, %T A143308 16,16,8,8,8,8,27,18,18,9,9,9,9,9,9,40,30,20,20,20,10,10,10,10,10,22, %U A143308 11,11,11,11,11,11,11,11,11,11,72,60,48,36,24,24,12,12,12,12,12,12 %N A143308 Triangle read by rows, A127446 * A000012, 1<=k<=n. %C A143308 Given triangle A127446, partial sums of terms starting from the right. %C A143308 Row sums give A064987. %C A143308 Left column is A038040. %e A143308 First few rows of the triangle = %e A143308 1; %e A143308 4, 2; %e A143308 6, 3, 3; %e A143308 12, 8, 4, 4; %e A143308 10, 5, 5, 5, 5; %e A143308 24, 18, 12, 6, 6, 6; %e A143308 14, 7, 7, 7, 7, 7, 7; %e A143308 Row 4 = (12, 8, 4, 4) since row 4 of triangle A127446 = (4, 4, 0, 4). %Y A143308 Cf. A038040, A064987, A127446. %K A143308 nonn,tabl,less %O A143308 1,2 %A A143308 _Gary W. Adamson_, Aug 06 2008 %E A143308 a(56) corrected by _Georg Fischer_, Jul 04 2023