A062987 Row sums of unsigned N(5) staircase array A062986.

1, 31, 2529, 284191, 37071329, 5268723231, 791682591201, 123697944483359, 19894672175770081, 3271817054307112479, 547678880100062177761, 93006445178165754746399, 15983911852747899752786401

Offset: 0

Author

Wolfdieter Lang, Jul 12 2001

Keywords

• nonn
• easy

Crossrefs

Cf. A002294, A062986, A062993.

Formula

a(n) = N(5; n, -1) with polynomials N(5; n, x) defined in A062986.

a(n) = Sum(((-1)^(n-j))*2^(4*j+1)*A002294(j), j=1..n)+(-1)^n, with A002294(j) = A062993(j+3, 3) = binomial(5*j, j)/(4*j+1).