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Search: id:A092066
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OFFSET
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1,1
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PROGRAM
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(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, ", ")));
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CROSSREFS
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Sequence in context: A090716 A083820 A052088 this_sequence A028981 A052016 A120804
Adjacent sequences: A092063 A092064 A092065 this_sequence A092067 A092068 A092069
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KEYWORD
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hard,nonn
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AUTHOR
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Mohammed Bouayoun (mohammed.bouayoun(AT)sanef.com), Feb 20 2004
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