A244166 Number of compositions of n in which the minimal multiplicity of parts equals 3.

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

Offset: 3

Author

Alois P. Heinz, Jun 21 2014

Keywords

• nonn

Links

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

Crossrefs

Column k=3 of A242451.

Programs

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);