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A076299 Prime(n) + s*n is prime, s=4. 5
2, 3, 4, 5, 6, 9, 15, 17, 20, 21, 22, 25, 27, 30, 31, 33, 42, 46, 54, 56, 58, 60, 62, 67, 72, 73, 78, 81, 84, 86, 87, 88, 90, 93, 96, 99, 100, 105, 111, 112, 113, 115, 119, 127, 128, 133, 135, 137, 145, 146, 151, 152, 162, 163, 164, 165, 168, 170, 172, 173, 176, 177 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See also A064402 (s=1), A076297 (s=2), A076298 (s=3), A076300 (s=5).
LINKS
EXAMPLE
4 is OK because p(4) + 4*4 = 7 + 16 = 23 is prime.
MATHEMATICA
Select[Range[500], PrimeQ[Prime[#] + 4 #] &] (* G. C. Greubel, May 04 2018 *)
PROG
(Magma) [n: n in [0..500]| IsPrime(NthPrime(n) +4*n)]; // G. C. Greubel, May 04 2018
(PARI) select(x->isprime(x), vector(500, n, prime(n) + 4*n), 1) \\ G. C. Greubel, May 04 2018
CROSSREFS
Sequence in context: A211697 A357570 A211676 * A341015 A136683 A200332
KEYWORD
nonn
AUTHOR
Zak Seidov, Oct 05 2002
STATUS
approved

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Last modified July 25 05:51 EDT 2024. Contains 374586 sequences. (Running on oeis4.)