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 A318193 Numbers k such that 465*2^k+1 is prime. 1
 2, 6, 9, 21, 41, 50, 74, 105, 119, 161, 191, 246, 255, 402, 419, 540, 941, 1085, 1245, 1250, 1415, 1992, 2169, 2243, 2640, 4908, 5102, 6410, 9078, 13215, 15609, 16239, 19059, 25070, 27326, 30455, 30681, 44255, 64833, 81269, 112710, 119001, 187589, 201468 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert Price, Table of n, a(n) for n = 1..58 Ray Ballinger, Proth Search Page Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600 Wilfrid Keller, List of primes k.2^n - 1 for k < 300 Eric Weisstein's World of Mathematics, Proth Prime MATHEMATICA Select[Range[1000], PrimeQ[465*2^# + 1] &] CROSSREFS Sequence in context: A095967 A316429 A047161 * A048083 A127931 A077237 Adjacent sequences:  A318190 A318191 A318192 * A318194 A318195 A318196 KEYWORD nonn,hard AUTHOR Robert Price, Jan 07 2019 STATUS approved

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Last modified October 17 14:20 EDT 2019. Contains 328113 sequences. (Running on oeis4.)