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A180292
Number of arrangements of n indistinguishable balls in n boxes with the maximum number of balls in any box equal to n-2.
1
1, 18, 50, 90, 147, 224, 324, 450, 605, 792, 1014, 1274, 1575, 1920, 2312, 2754, 3249, 3800, 4410, 5082, 5819, 6624, 7500, 8450, 9477, 10584, 11774, 13050, 14415, 15872, 17424, 19074, 20825, 22680, 24642, 26714, 28899, 31200, 33620, 36162, 38829, 41624
OFFSET
3,2
LINKS
FORMULA
Empirical: a(n)=n*binomial(n,n-2) for n>4.
CROSSREFS
(n-2)nd entry in rows of A180281.
Sequence in context: A095990 A102836 A217750 * A143928 A356743 A074173
KEYWORD
nonn
AUTHOR
R. H. Hardin, formula from Robert Gerbicz in the Sequence Fans Mailing List, Aug 24 2010
STATUS
approved