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A026890 T(2n+1,n+4), T given by A026769. 0
1, 9, 56, 301, 1506, 7258, 34322, 161039, 755145, 3556269, 16876326, 80881483, 392014244, 1922785012, 9545380884, 47947476888, 243553779646, 1250097073918, 6477850149236, 33857970839030, 178339124650000, 945852940569120 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

LINKS

Table of n, a(n) for n=3..24.

CROSSREFS

Sequence in context: A026849 A026879 A026863 * A163889 A296817 A034362

Adjacent sequences:  A026887 A026888 A026889 * A026891 A026892 A026893

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 19 16:25 EDT 2021. Contains 348091 sequences. (Running on oeis4.)