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, 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

R. H. Hardin, Table of n, a(n) for n=3..59

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

Adjacent sequences: A180289 A180290 A180291 * A180293 A180294 A180295

Keyword

nonn

Author

R. H. Hardin, formula from Robert Gerbicz in the Sequence Fans Mailing List, Aug 24 2010

Status

approved