A047159 T(2n,n), array T as in A047150.

1, 3, 13, 72, 417, 2509, 15438, 96310, 607231, 3859594, 24689329, 158756701, 1025210362, 6644336882, 43193144567, 281525730152, 1839132807282, 12038672624172, 78943126865652, 518485130526736, 3410150902046028

Offset

0,2

Links

Table of n, a(n) for n=0..20.

Crossrefs

Sequence in context: A214812 A188051 A247230 * A086662 A293195 A090754

Adjacent sequences: A047156 A047157 A047158 * A047160 A047161 A047162

Keyword

nonn

Author

Clark Kimberling. Definition revised Dec 08 2006

Status

approved