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A085390
a(n) = (n(n+1)^(n-2)+0^(n-2))/(n+1).
3
1, 3, 20, 180, 2058, 28672, 472392, 9000000, 194871710, 4729798656, 127253992476, 3760310514688, 121096582031250, 4222124650659840, 158473248526494992, 6371827248895377408, 273260286537746369382, 12451840000000000000000
OFFSET
2,2
COMMENTS
A diagonal of square array A085388.
CROSSREFS
Sequence in context: A242164 A129840 A358214 * A212789 A065980 A302581
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Jun 30 2003
STATUS
approved