OFFSET
3,2
COMMENTS
Exponent of 2 in prime factorization of A096421(n).
Observation: a(n) = (n-1)/2 for odd n.
EXAMPLE
A096421(10) = 1792 = 2^8 * 7, so a(10) = 8.
PROG
(PARI) {m=77; v=vector(m); v[1]=1; for(n=2, m, s=0; for(j=1, n-1, if(gcd(j, n)==1, s=s+v[j]*v[n-j])); v[n]=s); for(i=3, m, print1(factor(v[i])[1, 2], ", "))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Klaus Brockhaus, Aug 09 2004
STATUS
approved