Number of (n+1) X (2+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7 (constant-stress 1 X 1 tilings).
A235313
Number of (n+1) X (2+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7 (constant-stress 1 X 1 tilings).
Terms
- a(0) =392a(1) =1120a(2) =2744a(3) =8392a(4) =22568a(5) =71896a(6) =206360a(7) =675064a(8) =2026472a(9) =6751000a(10) =20907224a(11) =70560952a(12) =223435688a(13) =761260696a(14) =2450452760a(15) =8407382584a(16) =27402409832a(17) =94504374040a(18) =311023311704
External references
- oeis: A235313