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A075196 Table T(n,k) by antidiagonals. Partitions of n balls of k colors. 3
1, 2, 2, 3, 6, 3, 4, 12, 14, 5, 5, 20, 38, 33, 7, 6, 30, 80, 117, 70, 11, 7, 42, 145, 305, 330, 149, 15, 8, 56, 238, 660, 1072, 906, 298, 22, 9, 72, 364, 1260, 2777, 3622, 2367, 591, 30, 10, 90, 528, 2198, 6174, 11160, 11676, 6027, 1132, 42, 11, 110, 735, 3582 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Alois P. Heinz, Rows n = 1..141, flattened

EXAMPLE

1,  2,   3,    4,    5, ...

2,  6,  12,   20,   30, ...

3, 14,  38,   80,  145, ...

5, 33, 117,  305,  660, ...

7, 70, 330, 1072, 2777, ...

MAPLE

with (numtheory):

A:= proc(n, k) option remember; local d, j;

      `if`(n=0, 1, add(add(d*binomial(d+k-1, k-1),

       d=divisors(j)) *A(n-j, k), j=1..n)/n)

    end:

seq (seq (A(n, 1+d-n), n=1..d), d=1..12);  # Alois P. Heinz, Sep 26 2012

MATHEMATICA

Transpose[Table[nn=6; p=Product[1/(1- x^i)^Binomial[i+n, n], {i, 1, nn}]; Drop[CoefficientList[Series[p, {x, 0, nn}], x], 1], {n, 0, nn}]]//Grid  (* Geoffrey Critzer, Sep 27 2012 *)

CROSSREFS

Columns 1-3: A000041, A005380, A217093.

Rows 1-2: A000027, A002378.

Main diagonal: A075197.

Sequence in context: A047662 A183474 A210220 * A196912 A197079 A208340

Adjacent sequences:  A075193 A075194 A075195 * A075197 A075198 A075199

KEYWORD

nonn,tabl

AUTHOR

Christian G. Bower, Sep 07 2002

STATUS

approved

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Last modified October 25 22:07 EDT 2014. Contains 248558 sequences.