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A026893 T(2n,n-3), T given by A026780. 0
1, 15, 144, 1137, 8070, 53678, 342224, 2119359, 12856752, 76826324, 453947206, 2659486160, 15479103062, 89636939038, 517014933254, 2972784038825, 17051188983758, 97611767361074, 557935896092592, 3185250335024206 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

LINKS

Table of n, a(n) for n=3..22.

CROSSREFS

Sequence in context: A255944 A243418 A270511 * A163799 A206810 A025440

Adjacent sequences:  A026890 A026891 A026892 * A026894 A026895 A026896

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 26 08:18 EST 2020. Contains 331278 sequences. (Running on oeis4.)