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 A090834 Primes p such that p, p+6, p+12, p+18 are consecutive primes and p=6*k+5 for some k. 9
 251, 5381, 6311, 12641, 13451, 14741, 15791, 17471, 23321, 26171, 56081, 62201, 75521, 78791, 82781, 84431, 89381, 94421, 95261, 104711, 115751, 120551, 121001, 154061, 162251, 163841, 179801, 185051, 187361, 191021, 206021, 214451, 222311, 226631, 243521 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 EXAMPLE 251,257,263,269 are consecutive primes,257=251+6,263=251+12,269=251+18 and 251=6*41+5 MATHEMATICA Transpose[Select[Partition[Prime[Range[30000]], 4, 1], Differences[#]=={6, 6, 6}&&IntegerQ[(#[[1]]-5)/6]&]][[1]] (* Harvey P. Dale, Dec 12 2015 *) CROSSREFS Cf. A033451, A090832, A090833, A090835, A090836, A090837, A090838, A090839. Sequence in context: A340636 A234929 A218639 * A078968 A365468 A052239 Adjacent sequences: A090831 A090832 A090833 * A090835 A090836 A090837 KEYWORD easy,nonn AUTHOR Pierre CAMI, Dec 09 2003 EXTENSIONS More terms from Harvey P. Dale, Dec 12 2015 STATUS approved

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Last modified May 20 14:08 EDT 2024. Contains 372717 sequences. (Running on oeis4.)