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 A158277 The lesser of twin prime pairs with each prime in a different century. 10
 599, 2999, 3299, 4799, 5099, 6299, 8999, 10499, 11699, 21599, 25799, 26699, 29399, 33599, 34499, 36899, 37199, 42899, 44699, 47699, 49199, 56099, 57899, 60899, 63599, 65099, 65699, 70199, 74099, 81899, 83399, 85199, 88799, 92399, 97499, 100799, 101999, 102299 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The sequence is conjecturally infinite; note that those ending in 999 straddle millenia: A158861. Since any prime greater than 3 is congruent to 1 or 5 modulo 6, a(n)+1 is divisible by 300 (see A001359). - Hartmut F. W. Hoft, May 18 2017 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[100, 110000, 100], AllTrue[#+{1, -1}, PrimeQ]&]-1 (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Oct 21 2016 *) a158277[n_] := Map[Last, Select[Map[{NextPrime[#, 1], NextPrime[#, -1]}&, Range[100, n, 100]], First[#]-Last[#]==2&]] a158277[105000] (* data *) (* Hartmut F. W. Hoft, May 18 2017 *) CROSSREFS Cf. A060229, A158861, A001359, A060229. Sequence in context: A035209 A135847 A106762 * A250937 A261701 A172244 Adjacent sequences:  A158274 A158275 A158276 * A158278 A158279 A158280 KEYWORD nonn AUTHOR Ki Punches, Mar 15 2009 EXTENSIONS Corrected by Ray Chandler and R. J. Mathar, Apr 03 2009 STATUS approved

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Last modified February 24 22:57 EST 2020. Contains 332216 sequences. (Running on oeis4.)