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A347573
Number of partitions of n into 6 or more distinct parts.
5
1, 1, 2, 3, 5, 7, 11, 15, 21, 28, 38, 49, 65, 82, 105, 132, 165, 203, 251, 305, 371, 447, 537, 640, 763, 901, 1063, 1248, 1461, 1702, 1981, 2294, 2652, 3056, 3514, 4028, 4611, 5261, 5994, 6814, 7732, 8754, 9900, 11170, 12587, 14160, 15906, 17839, 19985, 22352
OFFSET
21,3
FORMULA
G.f.: Sum_{k>=6} x^(k*(k + 1)/2) / Product_{j=1..k} (1 - x^j).
MATHEMATICA
nmax = 70; CoefficientList[Series[Sum[x^(k (k + 1)/2)/Product[(1 - x^j), {j, 1, k}], {k, 6, nmax}], {x, 0, nmax}], x] // Drop[#, 21] &
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Sep 07 2021
STATUS
approved