Primes whose decimal representation also represents a prime in base 2.

Terms

a(0) =11a(1) =101a(2) =10111a(3) =101111a(4) =1011001a(5) =1100101a(6) =10010101a(7) =10011101a(8) =10100011a(9) =10101101a(10) =10110011a(11) =11000111a(12) =11100101a(13) =100111001a(14) =101001011a(15) =101101111a(16) =101111011a(17) =101111111a(18) =110111011a(19) =111001001a(20) =1000001011a(21) =1001001011a(22) =1001110111a(23) =1010000011a(24) =1010000111a(25) =1010001101