Primes p such that the concatenations of p and 123456789 in both orders are prime.

Terms

a(0) =409a(1) =653a(2) =881a(3) =1091a(4) =1489a(5) =1913a(6) =1993a(7) =2039a(8) =2729a(9) =3677a(10) =4073a(11) =5039a(12) =5507a(13) =5683a(14) =5849a(15) =7349a(16) =7789a(17) =7907a(18) =8419a(19) =8623a(20) =8689a(21) =9973a(22) =10429a(23) =11057a(24) =11617a(25) =11689a(26) =11821a(27) =12527a(28) =13367a(29) =14033