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A027310 Sum{(T(n,k)*T(n,k+2)}, 0<=k<=2n-2, T given by A026323. 0
1, 10, 84, 691, 5625, 45891, 375627, 3087869, 25492266, 211320955, 1758522205, 14686149360, 123057387973, 1034283033735, 8717735547615, 73673259617948, 624130742851351, 5299391600814357, 45091368351899283, 384429112020570375 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..20.

CROSSREFS

Sequence in context: A092718 A090763 A016131 * A287826 A155593 A239990

Adjacent sequences:  A027307 A027308 A027309 * A027311 A027312 A027313

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 23 2003

STATUS

approved

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Last modified September 17 04:49 EDT 2019. Contains 327119 sequences. (Running on oeis4.)