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A098692 Main diagonal of array in A098691. 1
1, 2, 10, 78, 777, 9800, 149796, 2690420, 55555500, 1296871224, 33773107758, 970753545580, 30527491279005, 1042604500906800, 38430716820193144, 1520662246114589640, 64291516462902839175, 2892426397164199846860 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A140763 A095789 A134980 * A138273 A052568 A063170

Adjacent sequences:  A098689 A098690 A098691 * A098693 A098694 A098695

KEYWORD

nonn

AUTHOR

Ralf Stephan, Sep 21 2004

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.