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A092064
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Prime numbers in A092063.
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1
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OFFSET
| 1,1
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PROG
| (PARI) f(n)= s=0; for(i=1, n, s=s+1/(prime(i)-1)); return(s); for (i=1, 500, if(isprime(f(i) && isprime(numerator(f(i))), print1(i, ", ")));
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CROSSREFS
| Sequence in context: A195354 A113165 A128025 * A152609 A172461 A091410
Adjacent sequences: A092061 A092062 A092063 * A092065 A092066 A092067
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KEYWORD
| hard,nonn
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AUTHOR
| Mohammed Bouayoun (mohammed.bouayoun(AT)sanef.com), Feb 20 2004
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