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 A226707 Least number k such that 5^(2^i) + k  is prime for i = 0,1,..,n-1. 4
 2, 6, 6, 48, 384, 1518, 2037018, 2037018, 44279730804, 424427587626 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(5) = 384 because k = 384 is the minimal k such that  N = 5^(2^i) + k is prime for i = 0, 1, 2, 3, 4; N = 389, 409, 1009, 391009, 152587891009. But 5^(2^5) + 384 is divisible by 797 and another prime. CROSSREFS Cf. A129613, A225560 A226281. Sequence in context: A155948 A228955 A328584 * A097504 A189144 A130726 Adjacent sequences:  A226704 A226705 A226706 * A226708 A226709 A226710 KEYWORD nonn,more AUTHOR Robin Garcia, Jun 15 2013 EXTENSIONS a(10) from Giovanni Resta, Jun 16 2013 STATUS approved

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Last modified January 28 17:48 EST 2022. Contains 350657 sequences. (Running on oeis4.)