OFFSET
0,7
COMMENTS
Are all the denominators exact powers of 2?
D_n=1 for all n <= 250. - Sean A. Irvine, Dec 17 2024
LINKS
Sean A. Irvine, Table of n, a(n) for n = 0..250
FORMULA
Convolution of Sum_{n=0..inf} A073749(n)/[D_n*2^{a(n)}] x^n yields the prime power series Sum_{n=0..inf} p_n x^n, where p_n is the n-th prime and p_0=1 and where D_n is a positive integer; D_n for the first 60 terms is 1 (is it always equal to 1?).
a(n) = A007814(denominator([x^n] sqrt(Sum_{k>=0} p_k * x^k))) with p_0=1. - Sean A. Irvine, Dec 17 2024
CROSSREFS
KEYWORD
easy,frac,nonn
AUTHOR
Paul D. Hanna, Aug 07 2002
STATUS
approved