Primes p such that for each digit of p, 2*p*(digit) + 1 is prime.

Terms

a(0) =3a(1) =11a(2) =131a(3) =173a(4) =491a(5) =797a(6) =947a(7) =1931a(8) =3583a(9) =4391a(10) =6173a(11) =7937a(12) =32323a(13) =49919a(14) =64499a(15) =79997a(16) =83383a(17) =149111a(18) =232333a(19) =296269a(20) =366161a(21) =477947a(22) =611333a(23) =616169a(24) =616961a(25) =635563a(26) =667673a(27) =969179a(28) =1111991a(29) =1779779