Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

A234916

Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

Terms

    a(0) =376a(1) =1128a(2) =3684a(3) =13336a(4) =49056a(5) =186500a(6) =710304a(7) =2755840a(8) =10693364a(9) =42087616a(10) =165680800a(11) =659882692a(12) =2629088000a(13) =10575205872a(14) =42553878500a(15) =172546960864a(16) =699893575232

External references