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Search: id:A115324
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A115324 Central terms of the rows of triangle A115323. +0
2
1, 1, 2, 4, 9, 22, 55, 141, 371, 997, 2712, 7440, 20542, 57056, 159343, 447045, 1259443, 3561529, 10119910, 28892841, 82727805, 237322575, 681862156, 1961930899, 5653182325, 16312268162, 47133250093, 136366337701 (list; graph; listen)
OFFSET

0,3

COMMENT

Limit a(n+1)/a(n) = 3.

CROSSREFS

Adjacent sequences: A115321 A115322 A115323 this_sequence A115325 A115326 A115327

Sequence in context: A055729 A048211 A098719 this_sequence A107092 A055588 A088456

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Jan 20 2006

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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