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A027241 a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026769. 0
1, 7, 38, 201, 991, 5119, 25108, 131207, 652171, 3467959, 17536482, 94772169, 487259131, 2668269045, 13920305080, 77008669339, 406737748473, 2267418205201, 12099265896022, 67836037484417, 365071772684071, 2055622507395167, 11141223793940397, 62938095325080771 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..25.

CROSSREFS

Sequence in context: A048437 A099461 A104553 * A292761 A226200 A056197

Adjacent sequences:  A027238 A027239 A027240 * A027242 A027243 A027244

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 26 2019

STATUS

approved

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Last modified January 27 06:18 EST 2022. Contains 350601 sequences. (Running on oeis4.)