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A255953
Number of collections of nonempty multisets with a total of n+3 objects of exactly n colors.
2
0, 5, 56, 492, 3936, 30710, 240012, 1904301, 15446672, 128576019, 1100414420, 9692024727, 87872444424, 820015945853, 7873581959208, 77748058644050, 789084769234176, 8226289694091564, 88033961164032132, 966450255695509761, 10877046448539404200
OFFSET
0,2
LINKS
FORMULA
a(n) = A255903(n+3,n).
EXAMPLE
a(1) = 5: {{1},{1},{1},{1}}, {{1},{1},{1,1}}, {{1,1},{1,1}}, {{1},{1,1,1}}, {{1,1,1,1}}.
CROSSREFS
A diagonal of A255903.
Sequence in context: A247710 A247774 A258490 * A174249 A073563 A006658
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 11 2015
STATUS
approved