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%I #25 Jan 10 2019 23:20:34
%S 4,5,6,7,8,9,12,13,16,17,18,21,23,29,31,33,35,36,41,58,63,66,69,82,96,
%T 99,148,157,175,196,241,267,349,394,404,414,435,456,485,498,537,548,
%U 584,715,727,765,929,1007,1076,1399,1619,1652,1715,2758,3039,3131,3773,3822,5001
%N Numbers k such that 3*2^k - 25 is prime.
%C Appears (at least initially) to contain more primes that the analogous sequences for 2^k-1 or 2^k-3. Compare the comment of Paul Bourdelais in A050414.
%e 7 is a term, because 3*2^7 - 25 = 359 is prime.
%t Select[Range[100], PrimeQ[3 2^# - 25] &]
%o (PARI) for(n=0, 2000, if(ispseudoprime(p=3*2^n-25), print1(n, ", ")));
%Y Cf. A050414.
%K nonn
%O 1,1
%A _Gilbert Mozzo_, Nov 07 2018