The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A181605 Twin primes ending in 7. 11
 7, 17, 107, 137, 197, 227, 347, 617, 827, 857, 1277, 1427, 1487, 1607, 1667, 1697, 1787, 1877, 1997, 2027, 2087, 2237, 2267, 2657, 2687, 3167, 3257, 3467, 3527, 3557, 3767, 3917, 4127, 4157, 4217, 4337, 4517, 4547, 4637, 4787, 4967, 5417, 5477, 5657 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS First disagrees with A092340 at n=26: A092340 contains 2707, but this sequence doesn't. Is this a subsequence of A092340? - Nathaniel Johnston, Jun 25 2011 Yes, it is a subsequence of A092340: see link. - Robert Israel, Apr 13 2021 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 Robert Israel, A181605 is a subsequence of A092340 FORMULA A001097 INTERSECT A030432. - R. J. Mathar, Nov 03 2010 MAPLE [7, op(select(t -> isprime(t) and isprime(t+2), [seq(i, i=17..10000, 30)]))]; # Robert Israel, Apr 13 2021 MATHEMATICA Select[Prime@ Range@ 800, Mod[ #, 10] == 7 && (PrimeQ[ # - 2] || PrimeQ[ # + 2]) &] (* Robert G. Wilson v, Nov 06 2010 *) CROSSREFS Cf. A001097, A092340, A181603, A181604, A181606. Sequence in context: A092057 A082738 A092340 * A284209 A068172 A067185 Adjacent sequences:  A181602 A181603 A181604 * A181606 A181607 A181608 KEYWORD nonn,base AUTHOR Omar E. Pol, Nov 01 2010 EXTENSIONS More terms from R. J. Mathar and Robert G. Wilson v, Nov 03 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 10 16:34 EDT 2021. Contains 343775 sequences. (Running on oeis4.)