A306525 Row sums of A306234.

0, 1, 3, 12, 53, 282, 1753, 12566, 102233, 931746, 9408941, 104310042, 1259745925, 16464164978, 231539899697, 3486551697582, 55972130401073, 954322312212546, 17222351842894933, 327979242711784226, 6573122342554664381, 138292026914011788882

Offset: 0

Author

Alois P. Heinz, Feb 21 2019

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 0..450

Crossrefs

Row sums of A306234.

Programs

Maple

a:= proc(n) option remember; `if`(n<5, [0, 1, 3, 12, 53][n+1],
      (2*(2*n^2-9*n+6)*a(n-1)  -(2*n^3-13*n^2+21*n-8)*a(n-2)
      -(4*n^2-21*n+30)*a(n-3) +(2*n^3-19*n^2+63*n-71)*a(n-4)
        -(2*n-5)*(n-4)*a(n-5)) / (2*n-7))
    end:
seq(a(n), n=0..23);