Smallest prime beginning and ending symmetrically with concatenation of first n natural numbers. Need not be a palindrome.
A068137
Smallest prime beginning and ending symmetrically with concatenation of first n natural numbers. Need not be a palindrome.
Terms
- a(0) =11a(1) =12421a(2) =1235321a(3) =123424321a(4) =12345254321
External references
- oeis: A068137