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A066972 sigma(binomial(2n,n)). +0
1
12, 42, 144, 728, 2688, 10080, 39312, 127008, 423360, 2419200, 6773760, 32140800, 160704000, 626745600, 1940889600, 9289728000, 38397542400, 156332851200, 642477588480, 2223960883200, 8154523238400, 36280077926400 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Sequence in context: A090554 A009948 A007586 this_sequence A122973 A074356 A088826

Adjacent sequences: A066969 A066970 A066971 this_sequence A066973 A066974 A066975

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 26 2002

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Last modified August 8 15:51 EDT 2008. Contains 142751 sequences.

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