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 A096585 #3 Mar 30 2012 18:36:40 %S A096585 1,3,8,20,44,96,186,372,678,1252,2194,3884,6502,11102,18194,29966, %T A096585 47988,77300,121194,191132,294986,456368,694516,1058334,1588762, %U A096585 2388128,3545232,5263138,7733564,11356850,16526932,24036988,34684020,49989938 %N A096585 Main diagonal of the square array A096583, in which the n-th diagonal equals the convolution of the n-th row with the antidiagonal sums (A096584). %C A096585 Forms the partial sums of A096584 (the antidiagonal sums of array A096583). %o A096585 (PARI) %Y A096585 Cf. A096583, A096584. %K A096585 nonn %O A096585 0,2 %A A096585 _Paul D. Hanna_, Jun 28 2004