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Search: id:A027987
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A027987 a(n) = Sum{T(n,k)*T(n,k+3)}, 0<=k<=2n-3, T given by A027960. +0
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58, 272, 1154, 4757, 19378, 78422, 315994, 1269270, 5086294, 20345092, 81265106, 324240331, 1292556986, 5149091916, 20500830986, 81586994576, 324577199086, 1290904257426, 5133037194706, 20407032157936, 81119882902118 (list; graph; listen)
OFFSET

3,1
CROSSREFS

Sequence in context: A127025 A067914 A051972 this_sequence A141779 A157252 A142966

Adjacent sequences: A027984 A027985 A027986 this_sequence A027988 A027989 A027990

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

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