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 A129352 #21 Mar 02 2021 06:02:10 %S A129352 70,35,35,15,40,15,5,30,30,5,1,16,36,16,1,5,30,30,5,15,40,15,35,35,70 %N A129352 Number parallelogram based on Pascal's triangle, read along diagonals. %e A129352 Terms are the following square, read by diagonals: %e A129352 70, 35, 15, 5, 1 %e A129352 35, 40, 30, 16, 5 %e A129352 15, 30, 36, 30, 15 %e A129352 5, 16, 30, 40, 35 %e A129352 1, 5, 15, 35, 70 %p A129352 with(combinat):T:=(n,i)->binomial(i,n)*binomial(8-i,4-n): for n from 0 to 4 do seq(T(n, i), i=0+n..8-4+n) od; %Y A129352 Cf. A113899. %K A129352 fini,full,nonn,less %O A129352 0,1 %A A129352 _Zerinvary Lajos_, May 28 2007 %E A129352 Edited slightly by _Charles R Greathouse IV_, Oct 28 2009