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A109994 Chen primes p such that their p + 2 counterpart is a Sarrus number (pseudoprime to base 2). 1
2699, 4679, 10259, 14489, 18719, 19949, 31607, 42797, 49139, 85487, 90749, 104651, 129887, 226799, 294269, 396269, 422657, 458987, 481571, 665279, 710531, 729059, 1082399, 1251947, 1302449, 1994687, 2035151, 2510567, 2811269, 3090089 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Conjecture: sequence is infinite.
LINKS
MATHEMATICA
Select[Range[10^5], PrimeQ[#] && PowerMod[2, (# + 1), # + 2] == 1 && PrimeNu[# + 2] == 2 &] (* Amiram Eldar, Jun 28 2019 *)
CROSSREFS
Sequence in context: A254547 A254477 A115930 * A322525 A254805 A254798
KEYWORD
nonn
AUTHOR
Jason Earls, Sep 01 2005
STATUS
approved

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Last modified April 15 20:47 EDT 2024. Contains 371696 sequences. (Running on oeis4.)