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 A177938 #23 May 23 2025 01:13:57 %S A177938 1,1,1,6,5,1,60,47,12,1,840,638,179,22,1,15120,11274,3325,485,35,1, %T A177938 332640,245004,74524,11985,1075,51,1,8648640,6314664,1961470,336049, %U A177938 34300,2086,70,1,259459200,188204400,59354028,10630508,1182769,83720 %N A177938 Triangle T(n,k) = (-1)^(k+n)*A054655(n,n-k), 0<=k<n, read by rows. %H A177938 Takao Komatsu, <a href="https://arxiv.org/abs/2505.09357">Some explicit values of a q-multiple zeta function at roots of unity</a>, arXiv:2505.09357 [math.NT], 2025. See p. 10. %F A177938 Row generating function: Gamma(x+2*n)/Gamma(x+n) = Sum_{k>=0} T(n,k)*x^k. %F A177938 T(n, k) = n!*(-1)^k*[x^k] hypergeom([-n, -x + n - 1], [-n], 1). - _Peter Luschny_, Mar 22 2022 %e A177938 [0] 1; %e A177938 [1] 1, 1; %e A177938 [2] 6, 5, 1; %e A177938 [3] 60, 47, 12, 1; %e A177938 [4] 840, 638, 179, 22, 1; %e A177938 [5] 15120, 11274, 3325, 485, 35, 1; %e A177938 [6] 332640, 245004, 74524, 11985, 1075, 51, 1; %e A177938 [7] 8648640, 6314664, 1961470, 336049, 34300, 2086, 70, 1; %e A177938 [8] 259459200, 188204400, 59354028, 10630508, 1182769, 83720, 3682, 92, 1; %t A177938 p[x_, n_] = If[n == 0, 1, (n - 1)! / FunctionExpand[Beta[x + n, n]]]; %t A177938 Table[CoefficientList[p[x, n], x], {n, 0, 8}] // Flatten (* rewritten by _Peter Luschny_, Mar 22 2022 *) %Y A177938 An unsigned, row-reversed variant of A054655. %Y A177938 Row sums are apparently A001813. %Y A177938 Cf. A001813, A054655. %K A177938 nonn,tabl %O A177938 0,4 %A A177938 _Roger L. Bagula_, May 15 2010