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A026859 T(2n,n-4), T given by A026747. 0
1, 15, 141, 1070, 7187, 44673, 263431, 1496218, 8266100, 44718596, 238015318, 1250656153, 6504202391, 33543967700, 171810543570, 875006817465, 4435130657170, 22390449598704, 112654298838120, 565172299571352 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Table of n, a(n) for n=4..23.

CROSSREFS

Sequence in context: A000481 A215765 A055903 * A096046 A093117 A045724

Adjacent sequences:  A026856 A026857 A026858 * A026860 A026861 A026862

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 18 04:10 EDT 2014. Contains 240688 sequences.