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A047124
T(n,n-2), array T as in A047120.
0
1, 1, 6, 22, 86, 335, 1307, 5071, 19664, 76299, 296396, 1152682, 4487818, 17492162, 68252789, 266589233, 1042279572, 4078677195, 15974343417, 62614027433, 245608306154, 964087953123, 3786809126547, 14883181075527
OFFSET
2,3
CROSSREFS
Sequence in context: A253070 A255461 A003699 * A046365 A266184 A255465
KEYWORD
nonn
STATUS
approved