A026089 - OEIS

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A026089

a(n) = T(2n,n), where T is the array defined in A026082.

1, 2, 4, 16, 93, 518, 2932, 16709, 95849, 552749, 3201848, 18616751, 108592239, 635175153, 3724193120, 21881993115, 128810517855, 759515272026, 4485048436792, 26520334731436, 157006248094198

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

CROSSREFS

Bisection of A026094.

Sequence in context: A007171 A058136 A156335 * A052835 A009565 A009838

Adjacent sequences: A026086 A026087 A026088 * A026090 A026091 A026092

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved