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A047092 T(n,n-1), array T as in A047089. 0
1, 2, 4, 19, 60, 237, 850, 3252, 12168, 46497, 177052, 679745, 2612226, 10079515, 38961906, 150982379, 586067980, 2278999145, 8874984360, 34609160383, 135125659144, 528166347564, 2066529185116, 8093134894351 (list; graph; refs; listen; history; text; internal format)
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

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Last modified January 17 18:28 EST 2018. Contains 297829 sequences.