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A009561 Index of central binomial coefficient C(2n,n) within A006987. +0
1
1, 4, 13, 28, 61, 119, 226, 423, 790, 1472, 2764, 5224, 9956, 19112, 36923, 71703, 139835, 273625, 536860, 1055588, 2079066, 4100573, 8096789, 16002500, 31652194, 62648225, 124068499, 245826760 (list; graph; listen)
OFFSET

2,2
CROSSREFS

Sequence in context: A054968 A087035 A112560 this_sequence A155266 A155413 A155326

Adjacent sequences: A009558 A009559 A009560 this_sequence A009562 A009563 A009564

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

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