Primes in which odd positioned digits are composite and even positioned digits are primes. The least significant digit is the taken to be the first digit.
A083821
Primes in which odd positioned digits are composite and even positioned digits are primes. The least significant digit is the taken to be the first digit.
Terms
- a(0) =29a(1) =59a(2) =79a(3) =439a(4) =479a(5) =659a(6) =829a(7) =839a(8) =859a(9) =929a(10) =2459a(11) =2659a(12) =2879a(13) =2939a(14) =3659a(15) =3929a(16) =5479a(17) =5639a(18) =5659a(19) =5839a(20) =5879a(21) =5939a(22) =7459a(23) =7639a(24) =7829a(25) =7879a(26) =42829a(27) =42839a(28) =42859a(29) =42929
External references
- oeis: A083821