Number of (n+1) X (3+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).
A235314
Number of (n+1) X (3+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) =1120a(1) =2744a(2) =5968a(3) =16352a(4) =40144a(5) =118160a(6) =316912a(7) =978320a(8) =2793040a(9) =8912144a(10) =26587888a(11) =86877392a(12) =267503824a(13) =889483280a(14) =2803453552a(15) =9443848400a(16) =30295673680a(17) =103054014224a(18) =335138253808
External references
- oeis: A235314