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 A297704 #10 Jan 08 2018 03:34:19 %S A297704 1,3,1,15,6,1,93,39,9,1,645,276,72,12,1,4791,2073,576,114,15,1,37275, %T A297704 16242,4689,1020,165,18,1,299865,131295,38889,8979,1635,225,21,1, %U A297704 2474025,1087080,327960,78888,15510,2448,294,24,1 %N A297704 Triangle read by rows, T(n,k) = binomial(n, k)*hypergeom2F1(k - n, n + 1, k + 2, -2) for n >= 0 and 0 <= k <= n. %H A297704 Peter Luschny, <a href="/A297704/b297704.txt">row n for n = 0..44</a> %e A297704 Triangle starts: %e A297704 [0] 1 %e A297704 [1] 3, 1 %e A297704 [2] 15, 6, 1 %e A297704 [3] 93, 39, 9, 1 %e A297704 [4] 645, 276, 72, 12, 1 %e A297704 [5] 4791, 2073, 576, 114, 15, 1 %e A297704 [6] 37275, 16242, 4689, 1020, 165, 18, 1 %t A297704 T[n_, k_] := Binomial[n, k] Hypergeometric2F1[k - n, n + 1, k + 2, -2]; %t A297704 Table[T[n, k], {n, 0, 6}, {k, 0, n}] // Flatten %Y A297704 T(n, 0) = A103210(n). %Y A297704 Row sums are A243626(n+1). %K A297704 nonn,tabl %O A297704 0,2 %A A297704 _Peter Luschny_, Jan 07 2018