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Search: id:A137340
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A137340 a(n)=2a(n-1)+3a(n-2). +0
1
1, 9, 21, 69, 201, 609, 1821, 5469, 16401, 49209 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Adjacent sequences: A137337 A137338 A137339 this_sequence A137341 A137342 A137343

Sequence in context: A020290 A020288 A147466 this_sequence A075640 A147480 A146396

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Apr 21 2008

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Last modified January 7 17:35 EST 2009. Contains 152824 sequences.

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