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A027147 a(n) = A027144(2n, n-2). 0
1, 12, 56, 480, 2040, 16576, 69888, 557568, 2361600, 18675712, 79613952, 626409472, 2686867456, 21071708160, 90875494400, 711081984000, 3081088991232, 24069137760256, 104712901754880, 816979824869376, 3566715303624704, 27800440481513472, 121738713372819456, 948129286114508800 (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: A199316 A081756 A307741 * A095724 A225880 A224832

Adjacent sequences:  A027144 A027145 A027146 * A027148 A027149 A027150

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 24 2019

STATUS

approved

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Last modified January 17 22:33 EST 2022. Contains 350410 sequences. (Running on oeis4.)