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 A344563 #14 May 30 2021 14:25:18 %S A344563 1,0,2,0,4,4,0,6,24,8,0,8,72,96,16,0,10,160,480,320,32,0,12,300,1600, %T A344563 2400,960,64,0,14,504,4200,11200,10080,2688,128,0,16,784,9408,39200, %U A344563 62720,37632,7168,256,0,18,1152,18816,112896,282240,301056,129024,18432,512 %N A344563 T(n, k) = binomial(n - 1, k - 1) * binomial(n, k) * 2^k, T(0, 0) = 1. Triangle read by rows, T(n, k) for 0 <= k <= n. %H A344563 T. Amdeberhan, <a href="https://mathoverflow.net/q/393532">Power of 2 dividing a specialized Mittag-Leffler polynomial</a>, MathOverflow. %e A344563 [0] 1; %e A344563 [1] 0, 2; %e A344563 [2] 0, 4, 4; %e A344563 [3] 0, 6, 24, 8; %e A344563 [4] 0, 8, 72, 96, 16; %e A344563 [5] 0, 10, 160, 480, 320, 32; %e A344563 [6] 0, 12, 300, 1600, 2400, 960, 64; %e A344563 [7] 0, 14, 504, 4200, 11200, 10080, 2688, 128; %e A344563 [8] 0, 16, 784, 9408, 39200, 62720, 37632, 7168, 256; %e A344563 [9] 0, 18, 1152, 18816, 112896, 282240, 301056, 129024, 18432, 512. %p A344563 aRow := n -> seq(binomial(n-1, k-1)*binomial(n,k)*2^k, k=0..n): %p A344563 seq(print(aRow(n)), n=0..9); %t A344563 T[n_, k_] := Binomial[n-1, k-1] * Binomial[n, k] * 2^k; %t A344563 Table[T[n, k], {n, 0, 9}, {k, 0, n}] // Flatten %o A344563 (Python) %o A344563 from math import comb %o A344563 def T(n, k): %o A344563 return comb(n-1, k-1)*comb(n, k)*2**k if k > 0 else k**n %o A344563 print([T(n, k) for n in range(10) for k in range(n+1)]) # _Michael S. Branicky_, May 30 2021 %Y A344563 Row sums are A002003 with a(0) = 1, cf. also A047781. %Y A344563 The coefficients of the associated polynomials are in A103371. %K A344563 nonn,tabl %O A344563 0,3 %A A344563 _Peter Luschny_, May 30 2021