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A244166 Number of compositions of n in which the minimal multiplicity of parts equals 3. 2
1, 0, 0, 1, 0, 0, 21, 35, 91, 105, 211, 221, 464, 441, 740, 2571, 5457, 14740, 37990, 89091, 203487, 416751, 877183, 1722277, 3374384, 6381902, 12054327, 22545335, 42054605, 78409434, 147669414, 280480248, 539039384, 1051964654, 2078682442, 4165775779 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,7

LINKS

Alois P. Heinz, Table of n, a(n) for n = 3..400

MAPLE

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

      add(b(n-i*j, i-1, p+j, k)/j!, j=[0, $max(1, k)..n/i])))

    end:

a:= n-> b(n$2, 0, 3) -b(n$2, 0, 4):

seq(a(n), n=3..50);

CROSSREFS

Column k=3 of A242451.

Sequence in context: A138227 A246157 A301789 * A301963 A219919 A219215

Adjacent sequences:  A244163 A244164 A244165 * A244167 A244168 A244169

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Jun 21 2014

STATUS

approved

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Last modified May 12 06:20 EDT 2021. Contains 343814 sequences. (Running on oeis4.)