Smallest n-digit composite palindrome.

A077543

Smallest n-digit composite palindrome.

Terms

    a(0) =4a(1) =22a(2) =111a(3) =1001a(4) =10001a(5) =100001a(6) =1000001a(7) =10000001a(8) =100000001a(9) =1000000001a(10) =10000000001a(11) =100000000001

External references