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A026908 T(2n,n), T given by A026907. 0
1, 44, 198, 758, 2824, 10530, 39516, 149274, 567120, 2164898, 8297206, 31907214, 123053938, 475753142, 1843357752, 7155936162, 27826486272, 108369397602, 422614721742, 1650118887102, 6450143419962, 25238550057222 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

FORMULA

a(n) = 4^n*GAMMA(n+1/2)*(38+99*n+49*n^2)*Pi^(-1/2)/GAMMA(n+3)-18   - based on guessed recurrence - Mark van Hoeij, Oct 30 2011.

CROSSREFS

Sequence in context: A159033 A238249 A189547 * A183246 A186248 A215677

Adjacent sequences:  A026905 A026906 A026907 * A026909 A026910 A026911

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 17 10:43 EDT 2017. Contains 293469 sequences.