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 A174372 Numbers k such that 12*k - 5, 12*k - 1, 12*k + 1, and 12*k + 5 are primes. 1
 1, 9, 19, 26, 91, 119, 124, 156, 224, 399, 436, 471, 569, 691, 1141, 1311, 1339, 1349, 1449, 1619, 1729, 1969, 2009, 2616, 2779, 2961, 3001, 3166, 3369, 3649, 3689, 6641, 6834, 7191, 7401, 7544, 7791, 7924, 8426, 8461, 9214, 9291, 9429, 9431, 9744 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 EXAMPLE 1 is a term because 1*12-5=7, 1*12-1=11, 1*12+1=13, and 1*12+5=17 are all prime. MATHEMATICA Select[Range[10^4], AllTrue[12# + {-5, -1, 1, 5}, PrimeQ] &] (* Amiram Eldar, Dec 17 2019 *) CROSSREFS Cf. A124519. Sequence in context: A106677 A350261 A091592 * A145906 A090065 A098791 Adjacent sequences: A174369 A174370 A174371 * A174373 A174374 A174375 KEYWORD nonn,easy AUTHOR Juri-Stepan Gerasimov, Mar 17 2010 EXTENSIONS Extended by Charles R Greathouse IV, Mar 18 2010 STATUS approved

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Last modified October 4 19:04 EDT 2023. Contains 365888 sequences. (Running on oeis4.)