A047046 T(n,n+1), array T as in A047040; T(n+1,n), array T given by A047050.

1, 2, 5, 14, 42, 146, 513, 1814, 6457, 23852, 88822, 331756, 1241569, 4704536, 17919729, 68426280, 261659138, 1005583928, 3876858984, 14975423376, 57918225459, 224542599510, 872234912198, 3393031324338, 13212674724177

Offset

0,2

Links

Table of n, a(n) for n=0..24.

Crossrefs

Sequence in context: A148332 A000751 A000744 * A063545 A061058 A060795

Adjacent sequences: A047043 A047044 A047045 * A047047 A047048 A047049

Keyword

nonn

Author

Clark Kimberling

Status

approved