Number of (n+1) X (1+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
A234875
Number of (n+1) X (1+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
Terms
- a(0) =32a(1) =68a(2) =128a(3) =268a(4) =512a(5) =1068a(6) =2048a(7) =4268a(8) =8192a(9) =17068a(10) =32768a(11) =68268a(12) =131072a(13) =273068a(14) =524288a(15) =1092268a(16) =2097152a(17) =4369068a(18) =8388608a(19) =17476268a(20) =33554432a(21) =69905068a(22) =134217728a(23) =279620268a(24) =536870912a(25) =1118481068a(26) =2147483648a(27) =4473924268
External references
- oeis: A234875