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A034872 Central column of Losanitsch's triangle A034851. +0
2
1, 1, 1, 2, 4, 6, 10, 19, 38, 66, 126, 236, 472, 868, 1716, 3235, 6470, 12190, 24310, 46252, 92504, 176484, 352716, 676270, 1352540, 2600612, 5200300, 10030008, 20060016, 38781096, 77558760, 150273315 (list; graph; listen)
OFFSET

0,4
LINKS

N. J. A. Sloane, Classic Sequences

CROSSREFS

Sequence in context: A000067 A133140 A026680 this_sequence A032362 A095007 A005194

Adjacent sequences: A034869 A034870 A034871 this_sequence A034873 A034874 A034875

KEYWORD

nonn

AUTHOR

njas

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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