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A270239 Number of partitions of n unlabeled objects of 6 colors. 2
1, 6, 42, 238, 1260, 6174, 28784, 128046, 548832, 2275372, 9166311, 35987028, 138069505, 518758758, 1912300908, 6926911674, 24688892511, 86685575466, 300137463682, 1025683381758, 3462381505989, 11553577667100, 38134513479591, 124575624677088, 402986660479024 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

FORMULA

G.f.: Product_{j>=1} 1/(1-x^j)^C(j+5,5).

MAPLE

with(numtheory):

a:= proc(n) option remember; `if`(n=0, 1, add(add(

      d*binomial(d+5, 5), d=divisors(j))*a(n-j), j=1..n)/n)

    end:

seq(a(n), n=0..30);

CROSSREFS

Column k=6 of A075196.

Sequence in context: A082139 A180286 A054613 * A229473 A141834 A180355

Adjacent sequences:  A270236 A270237 A270238 * A270240 A270241 A270242

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Mar 13 2016

STATUS

approved

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Last modified August 17 16:57 EDT 2019. Contains 326059 sequences. (Running on oeis4.)