OFFSET
0,4
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..2000
N. J. A. Sloane, Transforms
FORMULA
G.f.: 1 / (1 - Sum_{k>=1} pi(k) * x^k).
MAPLE
a:= proc(n) option remember; `if`(n=0, 1,
add(a(n-i)*numtheory[pi](i), i=1..n))
end:
seq(a(n), n=0..42);
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Feb 11 2021
STATUS
approved