A092066 Primes in A092065.

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

Offset: 1

Author

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

Keywords

• nonn
• hard
• more

Crossrefs

Cf. A092065.

Programs

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,",")));

Extensions

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