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A327679 Number of colored integer partitions of n using all colors of an initial interval of the color palette such that parts i have distinct color patterns in arbitrary order and each pattern for a part i has i colors in (weakly) increasing order. 2
1, 1, 4, 18, 112, 732, 6156, 53720, 559584, 6138216, 76636080, 1006039320, 14693223032, 224774090592, 3756082129296, 65650522695344, 1236568354232176, 24299076684879264, 509677108276779168, 11124779898457678240, 257204596479739401760, 6174928911548312072704 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..200

MAPLE

b:= proc(n, i, k) option remember; `if`(n=0, 1,

      `if`(i<1, 0, add(b(n-i*j, min(n-i*j, i-1), k)*

       binomial(binomial(k+i-1, i), j)*j!, j=0..n/i)))

    end:

a:= n-> add(add(b(n$2, i)*(-1)^(k-i)*binomial(k, i), i=0..k), k=0..n):

seq(a(n), n=0..22);

CROSSREFS

Row sums of A309973.

Sequence in context: A060223 A144085 A003708 * A330353 A000986 A143920

Adjacent sequences:  A327676 A327677 A327678 * A327680 A327681 A327682

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Sep 21 2019

STATUS

approved

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Last modified September 21 02:46 EDT 2020. Contains 337266 sequences. (Running on oeis4.)