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 A340529 #18 Jan 20 2021 17:53:40 %S A340529 1,3,5,1,8,3,1,10,5,3,1,1,14,8,5,3,3,1,1,16,10,8,5,5,3,3,1,1,1,1,20, %T A340529 14,10,8,8,5,5,3,3,3,3,1,1,1,1,23,16,14,10,10,8,8,5,5,5,5,3,3,3,3,1,1, %U A340529 1,1,1,1,1,27,20,16,14,14,10,10,8,8,8,8,5,5,5,5,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1 %N A340529 Irregular triangle read by rows T(n,k), (n >= 1, k >= 1), in which row n has length A000041(n-1) and every column k is A006218. %F A340529 a(m) = A006218(A336811(m)). %F A340529 T(n,k) = A006218(A336811(n,k)). %e A340529 Triangle begins: %e A340529 1; %e A340529 3; %e A340529 5, 1; %e A340529 8, 3, 1; %e A340529 10, 5, 3, 1, 1; %e A340529 14, 8, 5, 3, 3, 1, 1; %e A340529 16, 10, 8, 5, 5, 3, 3, 1, 1, 1, 1; %e A340529 20, 14, 10, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1; %e A340529 23, 16, 14, 10, 10, 8, 8, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1; %e A340529 ... %e A340529 For n = 6, the length of row 6 is A000041(5) = 7. %e A340529 The sum of row 6 is 14 + 8 + 5 + 3 + 3 + 1 + 1 = 35, equaling A006128(6). %Y A340529 Row sums give A006128. %Y A340529 Cf. A340525 (a regular version). %Y A340529 Members of the same family are: A336811, A339278, A339304, A340423. %Y A340529 Cf. A337209, A339258, A340530, A340531. %Y A340529 Cf. A000041, A006218. %K A340529 nonn,tabf %O A340529 1,2 %A A340529 _Omar E. Pol_, Jan 10 2021