A047044 T(n,n-2), array T as in A047040; T(n-2,n), array T given by A047050.

1, 2, 5, 9, 23, 66, 404, 715, 3244, 12945, 49742, 238048, 996158, 3991995, 15684363, 64972818, 263344734, 1051693340, 4160663948, 16706844738, 66843638750, 266105167977, 1054877000715, 4199766244915, 16715117321502

Offset

2,2

Links

Table of n, a(n) for n=2..26.

Crossrefs

Sequence in context: A246350 A192477 A288109 * A109621 A075200 A075198

Adjacent sequences: A047041 A047042 A047043 * A047045 A047046 A047047

Keyword

nonn

Author

Clark Kimberling

Status

approved