Consider all (2n+1)-digit palindromic primes of the form 70...0M0...07 (so that M is a palindrome with <= 2n-1 digits); a(n) = smallest such M.
A100956
Consider all (2n+1)-digit palindromic primes of the form 70...0M0...07 (so that M is a palindrome with <= 2n-1 digits); a(n) = smallest such M.
Terms
- a(0) =2a(1) =2a(2) =141a(3) =2a(4) =545a(5) =5a(6) =141a(7) =282a(8) =111a(9) =3a(10) =141a(11) =5a(12) =131a(13) =282a(14) =141a(15) =141a(16) =9a(17) =3a(18) =2a(19) =303a(20) =171a(21) =6a(22) =222a(23) =323a(24) =2a(25) =393a(26) =797a(27) =606a(28) =191a(29) =404
External references
- oeis: A100956