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A027105 a(n) = Sum_{k=0..n-1} T(n,k) * T(n,2n-k), with T given by A027082. 0
1, 5, 16, 68, 276, 1084, 4227, 16207, 61348, 229888, 853737, 3146649, 11522891, 41959547, 152044236, 548575204, 1971713228, 7062750256, 25222033633, 89824310345, 319101174069, 1131049761757, 4000730847474, 14124602551114 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..24.

CROSSREFS

Sequence in context: A128242 A323934 A166932 * A254203 A220903 A042087

Adjacent sequences:  A027102 A027103 A027104 * A027106 A027107 A027108

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 12 05:52 EST 2019. Contains 329051 sequences. (Running on oeis4.)