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A255952
Number of collections of nonempty multisets with a total of n+2 objects of exactly n colors.
2
0, 3, 23, 141, 848, 5190, 32835, 216006, 1480524, 10574613, 78652940, 608539283, 4891327374, 40788987473, 352412667201, 3150522213345, 29106469066976, 277557448176080, 2728859399410797, 27631899836521084, 287875667322386270, 3082851976122478749
OFFSET
0,2
LINKS
FORMULA
a(n) = A255903(n+2,n).
CROSSREFS
A diagonal of A255903.
Sequence in context: A049164 A081413 A179328 * A089950 A198797 A057835
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 11 2015
STATUS
approved