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 A131345 #6 May 29 2023 11:24:47 %S A131345 1,2,1,3,2,1,5,5,3,1,8,10,8,3,1,13,20,19,10,4,1,21,38,42,26,14,4,1,34, %T A131345 71,89,65,41,16,5,1,55,130,182,151,110,50,21,5,1,89,235,363,338,276, %U A131345 146,72,23,6,1,144,420,709,730,659,392,223,83,29,6,1 %N A131345 Triangle read by rows: A065941 * A046854 as infinite lower triangular matrices. %C A131345 Left border = Fibonacci numbers starting with F(2). Row sums = A131244: (1, 3, 6, 14, 30, 67, 146,...). A131344 = A046854 * A065941. %F A131345 A065941 * A046854 as infinite lower triangular matrics. %e A131345 First few rows of the triangle are: %e A131345 1; %e A131345 2, 1; %e A131345 3, 2, 1; %e A131345 5, 5, 3, 1; %e A131345 8, 10, 8, 3, 1; %e A131345 13, 20, 19, 10, 4, 1; %e A131345 21, 38, 42, 26, 14, 4, 1; %e A131345 ... %Y A131345 Cf. A046854, A065941, A131244, A131344. %K A131345 nonn,tabl %O A131345 0,2 %A A131345 _Gary W. Adamson_, Jun 30 2007 %E A131345 a(49) split and more terms from _Georg Fischer_, May 29 2023