A092066 Prime numbers in A092065.

2, 3, 5, 7, 43, 131, 229, 257

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Prog

(PARI) f(n)= s=0; for(i=1, n, s=s+1/(prime(i)-i)); return(s); for (i=1, 500, if(isprime(i) && isprime(numerator(f(i))), print1(i, ", ")));

Crossrefs

Sequence in context: A244556 A279954 A120804 * A224904 A028981 A223035

Adjacent sequences: A092063 A092064 A092065 * A092067 A092068 A092069

Keyword

hard,nonn

Author

Mohammed Bouayoun (mohammed.bouayoun(AT)sanef.com), Feb 20 2004

Status

approved