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A047755 a(n) = A047752(12n+5). 4
0, 0, 1, 5, 26, 133, 708, 3861, 21604, 123266, 715221, 4206956, 25032840, 150413348, 911379384, 5562367173, 34164355848, 211015212580, 1309815397995, 8166460799805, 51120054233490, 321156223592865, 2024257417812240, 12797201858645100 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

Also A047754(4n+1). The proof is elementary and involves reducing both expressions via the various linear expansions with A001764, A047753, A047751 and A047749 which are found in these sequences. - R. J. Mathar, Oct 18 2008

LINKS

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

CROSSREFS

Sequence in context: A331883 A047770 A047757 * A047768 A022032 A255118

Adjacent sequences:  A047752 A047753 A047754 * A047756 A047757 A047758

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

Edited by N. J. A. Sloane, Jan 17 2009 at the suggestion of R. J. Mathar

STATUS

approved

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Last modified August 13 02:09 EDT 2020. Contains 336441 sequences. (Running on oeis4.)