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A261792
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Primes of the form k*pi(k) - 1, where pi(k) is the number of primes <= k.
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1
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5, 7, 17, 31, 59, 83, 89, 151, 167, 233, 251, 373, 443, 467, 479, 601, 643, 719, 863, 911, 1019, 1097, 1151, 1187, 1291, 1439, 1553, 1637, 1759, 1931, 2207, 2861, 3023, 3389, 3449, 3539, 3659, 3719, 3779, 3967, 4759, 4793, 4861, 5471, 5507, 6269, 6551, 6959, 7039, 7079, 7643, 7727, 7853, 7937, 8623
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OFFSET
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1,1
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COMMENTS
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Primes of the form pi(k)*pi(prime(k)) + e^(i*Pi), where pi(k) is the number of primes <= k, i is the imaginary unit, Pi = 3.14159...
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LINKS
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MATHEMATICA
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PROG
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(PARI) list(lim)=my(v=List(), k, pi, t); while(1, if(isprime(k++), pi++); t=k*pi-1; if(t>lim, return(Vec(v))); if(isprime(t), listput(v, t))) \\ Charles R Greathouse IV, Sep 18 2015
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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