A337614 Lexicographically earliest sequence of distinct positive integers such that the concatenation of any three successive digits forms a prime.
1, 2, 7, 19, 3, 73, 9, 71, 91, 13, 11, 31, 37, 33, 17, 39, 77, 331, 79, 719, 97, 191, 93, 733, 113, 131, 137, 337, 397, 193, 739, 773, 311, 313, 139, 7191, 99, 197, 199, 1131, 317, 971, 911, 373, 379, 7193, 797, 1911, 3113, 173, 977, 3311, 3131, 1311, 3137, 3313, 179, 7197, 1919, 919, 1137
Offset: 1
Examples
The first terms 1, 2, 7, 19, 3, 73, 9, ... form (when 3 successive digits are concatenated) the prime numbers 127, 271, 719, 193, 937, 373, 739, ...
Links
- Jean-Marc Falcoz, Table of n, a(n) for n = 1..1500