A026092 - OEIS

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A026092

a(n) = T(2n,n-1), where T is the array defined in A026082.

1, 1, 9, 45, 248, 1377, 7756, 44096, 252570, 1455166, 8424011, 48960606, 285512823, 1669721225, 9788890230, 57511916805, 338536358979, 1996103321754, 11787262391390, 69699393574522

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

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..20.

CROSSREFS

Sequence in context: A189274 A270567 A316108 * A054628 A132133 A009410

Adjacent sequences: A026089 A026090 A026091 * A026093 A026094 A026095

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved