A276732 Primes p such that (p + 1)/10 is also prime.

19, 29, 109, 229, 409, 709, 829, 1009, 1069, 1129, 1489, 1669, 1789, 2269, 2389, 2689, 3109, 3169, 3469, 3529, 3889, 4789, 4909, 5209, 5569, 5689, 5869, 6469, 6529, 6829, 8089, 8209, 8269, 8389, 8629, 9109, 9769, 9829, 10909, 12289, 12589, 12829, 12889, 13009, 13669, 13729, 14389

Offset: 1

Author

Zak Seidov, Sep 16 2016

Keywords

• nonn

Links

• Zak Seidov, Table of n, a(n) for n = 1..9259

Crossrefs

Cf. A137516, A158017.

Programs

Mathematica

Select[Prime@ Range@ 1800, PrimeQ[(# + 1)/10] &] (* Michael De Vlieger, Sep 16 2016 *)

Formula

a(n) = 10*A158017(n)-1.