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A248790
Numbers n with the property that p = n^2 - 11 and q = n^2 + 11 are consecutive primes.
1
510, 720, 1200, 2190, 4350, 4980, 5040, 5250, 5670, 6810, 8280, 8490, 9150, 10140, 10650, 11430, 12510, 13800, 13980, 14160, 14640, 14700, 14820, 15000, 15750, 16890, 17220, 18180, 18270, 18750, 19110, 20940, 21270, 22050, 24000, 24570, 24720, 24990, 25620, 25920, 26520
OFFSET
1,1
COMMENTS
All terms are == 0 (mod 30).
EXAMPLE
n=510, p=260089=prime(22845), q=260111=prime(22846).
PROG
(PARI) isok(n) = isprime(p=n^2-11) && isprime(q=n^2+11) && (q==nextprime(p+1)); \\ Michel Marcus, Oct 14 2014
CROSSREFS
Subsequence of A176683 and of A075190. E.g., a(1)=510=A075190(62)=A176683(6).
Cf. A248785.
Sequence in context: A048254 A303994 A249551 * A252877 A202595 A252882
KEYWORD
nonn
AUTHOR
Zak Seidov, Oct 14 2014
STATUS
approved