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A026968 a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026637. 0
1, 8, 41, 208, 856, 3552, 14172, 56462, 223292, 881656, 3475141, 13688112, 53891760, 212145608, 835111160, 3287779006, 12946154944, 50989472460, 200879577216, 791617503410 (list; graph; refs; listen; history; internal format)
OFFSET

2,2

CROSSREFS

Sequence in context: A080840 A199846 A188180 * A026978 A037577 A051737

Adjacent sequences:  A026965 A026966 A026967 * A026969 A026970 A026971

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.