A047768 a(n) = A047766(6n+2).

0, 0, 1, 5, 26, 133, 708, 3861, 21604, 123266, 715221, 4206956, 25032840, 150413348, 911379384, 5562367173, 34164355848, 211015212580, 1309815397995, 8166460799805, 51120054233490, 321156223592865, 2024257417812240, 12797201858645100

Offset

0,4

Comments

Is this the same as A047755? - R. J. Mathar, Oct 18 2008

Links

Table of n, a(n) for n=0..23.

Crossrefs

Sequence in context: A047770 A047757 A047755 * A022032 A255118 A052918

Adjacent sequences: A047765 A047766 A047767 * A047769 A047770 A047771

Keyword

nonn

Author

N. J. A. Sloane

Status

approved