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A081293 a(n) = A000108(n)+A014137(n). 1
2, 3, 6, 14, 37, 107, 329, 1055, 3486, 11780, 40510, 141286, 498524, 1776312, 6382292, 23097542, 84118037, 308049947, 1133682557, 4190570237, 15551547887, 57919961507, 216418821767, 811055485427, 3047804166425, 11481792822005 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

LINKS

Guo-Niu Han, Enumeration of Standard Puzzles

CROSSREFS

Cf. A081289.

Sequence in context: A001420 A049339 A157100 * A193215 A007611 A098641

Adjacent sequences:  A081290 A081291 A081292 * A081294 A081295 A081296

KEYWORD

nonn

AUTHOR

Antti Karttunen (Firstname.Surname(AT)iki.fi) Mar 17 2003

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Last modified February 14 00:47 EST 2012. Contains 205567 sequences.