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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
OFFSET
4,2
CROSSREFS
Sequence in context: A215765 A055903 A320818 * A096046 A093117 A045724
KEYWORD
nonn
STATUS
approved