A047092 T(n,n-1), array T as in A047089.

1, 2, 4, 19, 60, 237, 850, 3252, 12168, 46497, 177052, 679745, 2612226, 10079515, 38961906, 150982379, 586067980, 2278999145, 8874984360, 34609160383, 135125659144, 528166347564, 2066529185116, 8093134894351

Offset

1,2

Links

Table of n, a(n) for n=1..24.

Crossrefs

Sequence in context: A154140 A131578 A018273 * A229485 A064228 A226891

Adjacent sequences: A047089 A047090 A047091 * A047093 A047094 A047095

Keyword

nonn

Author

Clark Kimberling

Status

approved