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A027145 a(n) = A027144(2n, n). 0
1, 4, 12, 80, 304, 2176, 8832, 64768, 271104, 2013184, 8579072, 64200704, 276815872, 2082406400, 9053405184, 68364861440, 299056168960, 2264753766400, 9954207989760, 75553161871360, 333336432082944, 2534637351993344, 11217239353065472, 85421341058007040, 379009013460762624 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..24.

CROSSREFS

Sequence in context: A301340 A244058 A165261 * A299795 A010370 A197852

Adjacent sequences:  A027142 A027143 A027144 * A027146 A027147 A027148

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 24 2019

STATUS

approved

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Last modified February 23 15:00 EST 2020. Contains 332166 sequences. (Running on oeis4.)