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 A090260 Beginning with 1, distinct numbers such that concatenation a(n+1), a(n), a(n+1) is a prime. 1
 1, 3, 11, 13, 17, 7, 111, 23, 9, 19, 27, 43, 33, 29, 31, 41, 37, 21, 53, 51, 47, 39, 73, 107, 49, 59, 57, 61, 71, 63, 79, 77, 67, 87, 97, 81, 89, 103, 69, 109, 93, 113, 99, 1019, 123, 131, 117, 101, 1017, 139, 173, 91, 137, 171, 127, 143, 141, 83, 181, 119, 151, 129, 133 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE 313,11311,131113 etc. are all primes. CROSSREFS Cf. A090261. Sequence in context: A177335 A031449 A305859 * A179522 A020635 A175820 Adjacent sequences:  A090257 A090258 A090259 * A090261 A090262 A090263 KEYWORD base,nonn AUTHOR Amarnath Murthy, Nov 28 2003 EXTENSIONS More terms from David Wasserman, Apr 22 2004 STATUS approved

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Last modified November 29 14:23 EST 2020. Contains 338769 sequences. (Running on oeis4.)