A092066 Primes in A092065.

2, 3, 5, 7, 43, 131, 229, 257, 823, 1181, 2269, 2801

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Prog

(PARI) f(n)= my(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

Cf. A092065.

Sequence in context: A244556 A279954 A120804 * A224904 A028981 A223035

Adjacent sequences: A092063 A092064 A092065 * A092067 A092068 A092069

Keyword

nonn,hard,more

Author

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

Extensions

a(9)-a(12) from Amiram Eldar, Jul 22 2025

Status

approved