2101012

Appears in sequences

• Palindromic primes in base 3 (written in base 3).at n=13A117698
• Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).at n=11A235292