A126226 Continued fraction of Product_{primes p} ((p-1)/p)^(1/p).

0, 1, 1, 3, 1, 2, 11, 1, 1, 4, 1, 9, 2, 2, 1, 1, 4, 4, 2, 2, 2, 1, 14, 1, 2, 2, 2, 7, 2, 2, 1, 1, 4, 2, 4, 1, 11, 7, 2, 8, 32, 2, 1, 293, 2, 145, 1, 2, 1, 21, 1, 1, 3, 1, 1, 8, 8, 5, 2, 3, 4, 3, 1, 3, 1, 1, 1, 1, 3, 2, 1, 3, 1, 2, 2, 1, 2, 19, 3, 2, 1, 15, 1, 2, 1, 2, 5, 3, 1, 1, 1, 38, 1, 10, 1, 2, 1, 80, 1

Offset: 0

Author

Martin Fuller, Dec 20 2006

Keywords

• cofr
• nonn

Comments

This might be interpreted as the expected value of phi(n)/n for very large n. - David W. Wilson, Dec 05 2006

Examples

			0.55986561693237348...
		

Crossrefs

Cf. A124175, A085548, A085541, A085964, A085965, A085966, A085967, A085968, A085969.

Programs

PARI

contfrac(exp(-suminf(m=2,log(zeta(m))*sumdiv(m,k,if(k