1,1

If n=3, then n1n = 313 (prime).

If n=41, then n1n = 41141 (prime).

If n=89, then n1n = 89189 (prime).

Sequence in context: A106676 A050795 A050797 this_sequence A032400 A004621 A014209

Adjacent sequences: A103964 A103965 A103966 this_sequence A103968 A103969 A103970

base,nonn

Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Mar 30 2005