A172014 A142459(2*n,n)/(n+1).

1, 5, 354, 88153, 48340622, 46980371858, 71465177189700, 157019003242118337, 471091863366049740694, 1851713757075363098855542

Offset: 0

Author

Roger L. Bagula, Nov 19 2010

Keywords

• nonn

Crossrefs

Cf. A142459.

Programs

Mathematica

A[n_, 1] := 1; A[n_, n_] := 1;
A[n_, k_] := (4*n - 4*k + 1)A[n - 1, k - 1] + (4*k - 3)A[n - 1, k];
a = Table[A[n, k], {n, 20}, {k, n}];
Table[a[[2*n + 1, n + 1]]/(n + 1), {n, 0, 9}]

Formula

a(n) = A142459(2*n,n)/(n+1).