A224859 Numbers n such that 90*n + 47 and 90*n + 49 are twin primes.

1, 2, 9, 16, 18, 22, 29, 38, 39, 43, 50, 51, 87, 95, 107, 108, 109, 111, 121, 123, 134, 137, 143, 144, 155, 160, 162, 176, 178, 193, 195, 199, 200, 227, 230, 233, 237, 239, 240, 241, 247, 248, 251, 261, 262, 277, 304, 314, 324, 326, 328, 338, 339, 352, 363, 370

Offset

1,2

Comments

All matching entries for A201734 and A201818 are twin primes.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

A201734 intersect A201818.

Mathematica

Select[Range[0, 499], PrimeQ[90# + 47] && PrimeQ[90# + 49] &] (* copied from: Alonso del Arte, Jul 22 2013 *)
Select[Range[500], AllTrue[90#+{47, 49}, PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Oct 18 2015 *)

Crossrefs

Cf. A201734, A201818.

Sequence in context: A083783 A162614 A031238 * A136345 A017005 A131189

Adjacent sequences: A224856 A224857 A224858 * A224860 A224861 A224862

Keyword

nonn

Author

J. W. Helkenberg, Jul 22 2013

Status

approved