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Search: id:A107723
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A107723 Column 0 of triangle A107722. +0
1
1, 2, 12, 114, 1446, 22722, 424302, 9168162, 224961774, 6180211842, 187977996366, 6272676296034, 227890380810606, 8955881754461250, 378593286191735694, 17131977268344445218, 826338384025220612526, 42323768184940929568770 (list; graph; listen)
OFFSET

0,2

COMMENT

Shift left 1 place equals twice column 1 of triangle A107717.

PROGRAM

(PARI)

CROSSREFS

Cf. A107717, A107722.

Adjacent sequences: A107720 A107721 A107722 this_sequence A107724 A107725 A107726

Sequence in context: A141141 A128571 A052696 this_sequence A035051 A012628 A012623

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), May 30 2005

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Last modified January 8 02:43 EST 2009. Contains 152824 sequences.


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