Number of (n+1) X (2+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6 (constant-stress 1 X 1 tilings).

A235304

Number of (n+1) X (2+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6 (constant-stress 1 X 1 tilings).

Terms

    a(0) =210a(1) =518a(2) =1106a(3) =2918a(4) =6786a(5) =18662a(6) =46226a(7) =130598a(8) =338370a(9) =973478a(10) =2602706a(11) =7582118a(12) =20721666a(13) =60895142a(14) =169042706a(15) =499829798a(16) =1403453250a(17) =4167788198a(18) =11804391506a(19) =35162436518a(20) =100271311746a(21) =299327750822a(22) =858333411986

External references