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

0,3

Links

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

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);

Crossrefs

Row sums of A306234.

Sequence in context: A307412 A302188 A060460 * A293131 A120983 A124810

Adjacent sequences: A306522 A306523 A306524 * A306526 A306527 A306528

Keyword

nonn

Author

Alois P. Heinz, Feb 21 2019

Status

approved