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A027303 a(n) = Sum_{k=0..floor((n-3)/2)} T(n,k) * T(n,k+2)}, with T given by A008315. 0
2, 5, 34, 98, 496, 1545, 7010, 22924, 98636, 333463, 1393014, 4824350, 19795200, 69818507, 283195638, 1013208668, 4078132240, 14758843463, 59087809638, 215859015800, 860951003152, 3169965920150, 12609168181324, 46735070397768, 185532421441976, 691582241867227 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..28.

CROSSREFS

Sequence in context: A114793 A254429 A298945 * A356772 A307143 A052695

Adjacent sequences:  A027300 A027301 A027302 * A027304 A027305 A027306

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 26 2019

STATUS

approved

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Last modified October 1 00:17 EDT 2022. Contains 357111 sequences. (Running on oeis4.)