OFFSET
0,2
FORMULA
Conjecture : a(n)= (2n+1)*prod(p | 2n+1, (p-1)/2)=(2n+1)/(-2)^omega(2n+1)*sum(d | 2n+1, d*mu(d))
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Feb 12 2004
STATUS
approved