OFFSET
1,2
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Smooth Number
Eric Weisstein's World of Mathematics, Partition Function P
FORMULA
G.f.: Product_{a>=0} Product_{b>=0} Product_{c>=0} 1/(1-x^(2^a*3^b*5^c)). - Robert Israel, Apr 16 2019
MAPLE
N:= 100:
P:= select(t -> max(numtheory:-factorset(t))<=5, [$1..N]):
S:= series(mul(1/(1-q^k), k=P), q, N+1):
seq(coeff(S, q, k), k=1..N); # Robert Israel, Apr 16 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Sep 14 2005
STATUS
approved