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A047159
T(2n,n), array T as in A047150.
0
1, 3, 13, 72, 417, 2509, 15438, 96310, 607231, 3859594, 24689329, 158756701, 1025210362, 6644336882, 43193144567, 281525730152, 1839132807282, 12038672624172, 78943126865652, 518485130526736, 3410150902046028
OFFSET
0,2
CROSSREFS
Sequence in context: A214812 A188051 A247230 * A086662 A293195 A090754
KEYWORD
nonn
AUTHOR
Clark Kimberling. Definition revised Dec 08 2006
STATUS
approved