Palindromic primes that yield a prime when sandwiched between two 3's. (Prefixing and suffixing a -three' on both sides yields another pal prime).

A088270

Palindromic primes that yield a prime when sandwiched between two 3's. (Prefixing and suffixing a -three' on both sides yields another pal prime).

Terms

    a(0) =5a(1) =7a(2) =101a(3) =151a(4) =353a(5) =727a(6) =757a(7) =929a(8) =10301a(9) =10601a(10) =12721a(11) =15551a(12) =16061a(13) =16661a(14) =18181a(15) =19391a(16) =19891a(17) =30403a(18) =30703a(19) =31013a(20) =31513a(21) =35353a(22) =36263a(23) =36563a(24) =38083a(25) =39293a(26) =72227a(27) =73237a(28) =76367a(29) =77377

External references