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A138275 Central terms of triangle A138271. +0
5
1, 2, 18, 268, 5320, 129474, 3700550, 121016160, 4448701704, 181463572394, 8130511993010, 396880976034092, 20963000461338000, 1191187898025406514, 72455444438093714542, 4697146562744837487104, 323299667265950287087968 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Cf. A138271; A138272, A138273, A138274.

Sequence in context: A141009 A143154 A032037 this_sequence A127134 A131455 A084947

Adjacent sequences: A138272 A138273 A138274 this_sequence A138276 A138277 A138278

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Mar 11 2008

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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