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A026886 T(2n,n+4), T given by A026769. 0
1, 10, 67, 380, 1978, 9814, 47391, 225590, 1067527, 5051454, 24001979, 114858924, 554704282, 2707092726, 13359365962, 66678605418, 336519708452, 1716476383658, 8842304168692, 45966748864706, 240938394287134, 1272300373503706 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Table of n, a(n) for n=4..25.

CROSSREFS

Sequence in context: A026844 A026875 A026868 * A079156 A324366 A197783

Adjacent sequences:  A026883 A026884 A026885 * A026887 A026888 A026889

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 12 12:05 EDT 2022. Contains 356072 sequences. (Running on oeis4.)