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A027035 T(n,n) + T(n,n+1) + ... + T(n,2n), T given by A027023. 2
1, 2, 5, 14, 39, 112, 323, 932, 2693, 7790, 22565, 65466, 190243, 553748, 1614363, 4713432, 13780841, 40343210, 118243273, 346937614, 1018958151, 2995407840, 8812890391, 25948662684, 76457517949, 225429675606, 665069604713 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A026135 A201778 A105641 * A102406 A151409 A003054

Adjacent sequences:  A027032 A027033 A027034 * A027036 A027037 A027038

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.