Numbers n such that n, 10*n+1, 10*n+3, 10*n+7 and 10*n+9 are all primes.

Terms

a(0) =19a(1) =6949a(2) =10111a(3) =15727a(4) =20149a(5) =24799a(6) =26041a(7) =26881a(8) =29587a(9) =29947a(10) =40213a(11) =41203a(12) =44257a(13) =46747a(14) =47701a(15) =49057a(16) =50023a(17) =51061a(18) =55921a(19) =66109a(20) =66643a(21) =73939a(22) =76819a(23) =79579a(24) =95947a(25) =106501a(26) =110083a(27) =111781a(28) =112213a(29) =114679