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Numbers k such that (3^j)*k + 1 are primes for j=0 to 6.
2

%I #7 Mar 20 2020 10:36:33

%S 1197630,20402760,25451790,29445850,43830780,44898210,52214050,

%T 76355370,84234990,88337550,99495550,123074070,135740430,155333920,

%U 156954700,165098290,216858460,218715490,229066110,232590400,234109120,236536510

%N Numbers k such that (3^j)*k + 1 are primes for j=0 to 6.

%H Jinyuan Wang, <a href="/A112129/b112129.txt">Table of n, a(n) for n = 1..1000</a>

%o (PARI) for(k=1, 250000000, j=0; while(isprime((3^j)*k+1),j++); if(j>=7, print1(k, ", "))); \\ _Rick L. Shepherd_, Aug 29 2005

%Y Cf. A112130.

%K nonn

%O 1,1

%A _Pierre CAMI_, Aug 27 2005

%E More terms from _Rick L. Shepherd_, Aug 29 2005