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A180289
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Number of arrangements of n indistinguishable balls in n boxes with the maximum number of balls in any box equal to 9.
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1
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9, 90, 605, 3432, 17745, 86632, 406980, 1860480, 8335338, 36773397, 160286166, 691906090, 2963163525, 12606797973, 53339223410, 224614532520, 942028278750, 3936923432325, 16402410574875, 68151368796840, 282481941399420, 1168338215983320, 4822856224887175
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OFFSET
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9,1
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LINKS
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MAPLE
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b:= proc(n, i, k) option remember; `if`(n=0, 1,
`if`(i=0, 0, add(b(n-j, i-1, k), j=0..min(n, k))))
end:
a:= n-> (k-> b(n$2, k)-b(n$2, k-1))(9):
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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