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URL: https://oeis.org/A143713

⇱ A143713 - OEIS

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A143713
Numbers k such that k! - prime(k-1) is prime.
0
3, 4, 5, 6, 10, 22, 31, 92, 174, 237, 886, 1075, 1357, 2428, 3700, 6319, 9116
OFFSET
1,1
MATHEMATICA
Select[Range[2, 1000], PrimeQ[#!-Prime[#-1]]&] (* Harvey P. Dale, Oct 31 2013 *)
PROG
(PARI) for(n=2, 1000, if(isprime(n! - prime(n-1)), print1(n, ", ")))
CROSSREFS
Cf. A064401.
Sequence in context: A103033 A099561 A110300 * A271821 A261459 A215249
KEYWORD
nonn,hard,more
AUTHOR
EXTENSIONS
a(11) from Harvey P. Dale, Oct 31 2013
a(12)-a(15) from Metin Sariyar, Sep 27 2019
a(16) from Michael S. Branicky, Jun 08 2023
a(17) from Michael S. Branicky, Apr 23 2025
STATUS
approved