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 A134195 #10 Jul 14 2022 17:24:49 %S A134195 1,3,7,15,32,72,178,494,1543,5373,20581,85653,383494,1833250,9301792, %T A134195 49857540,281193501,1663183383,10286884195,66365330811,445598473612, %U A134195 3107611606908,22470529228910,168190079241210,1301213084182483,10391369994732593,85553299734530113 %N A134195 Antidiagonal sums of square array A126885. %C A134195 Conjecture: partial sums of A104879. - _Sean A. Irvine_, Jul 14 2022 %e A134195 a(4) = 1 + 5 + 11 + 10 + 5 = 32. %o A134195 (Maxima) %o A134195 T(n, k) := if k = 1 then 1 else n*T(n, k - 1) + k$ /* A126885 */ %o A134195 a(n) := sum(T(n - k + 1, k), k, 1, n + 1)$ %o A134195 makelist(a(n), n, 0, 50); /* _Franck Maminirina Ramaharo_, Jan 26 2019 */ %Y A134195 Cf. A126885. %K A134195 nonn,easy %O A134195 0,2 %A A134195 _Gary W. Adamson_, Oct 12 2007