OFFSET
21,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 21..1000
MAPLE
g:= proc(n, i) option remember; convert(series(`if`(n=0, 1,
`if`(i<1, 0, add(g(n-i*j, i-1)*(ithprime(i)*x)^j
, j=0..min(1, n/i)))), x, 7), polynom)
end:
a:= n-> coeff(g(n$2), x, 6):
seq(a(n), n=21..60);
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 27 2015
STATUS
approved