A331076 Sum_{k = 1 to floor(n/2)} [u_3(k)*u_3(n+1-k)], where u_3 = A034836.

0, 1, 1, 2, 3, 4, 5, 8, 8, 11, 11, 16, 16, 19, 18, 29, 24, 31, 28, 39, 34, 43, 36, 60, 44, 57, 49, 71, 55, 75, 61, 93, 73, 90, 71, 118, 83, 107, 93, 135, 95, 135, 102, 152, 118, 147, 112, 202, 126, 169, 145, 203, 139, 211, 147, 233, 177, 215, 160, 286

Offset

1,4

Comments

For background references see A330570.

Links

Table of n, a(n) for n=1..60.

Crossrefs

Cf. A034836.

See A331075 for another version.

Sequence in context: A297694 A297637 A325415 * A316496 A332339 A100882

Adjacent sequences: A331073 A331074 A331075 * A331077 A331078 A331079

Keyword

nonn

Author

N. J. A. Sloane, Jan 10 2020

Status

approved