Number of n X 7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically.
A207681
Number of n X 7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically.
Terms
- a(0) =28a(1) =784a(2) =1488a(3) =4846a(4) =14090a(5) =29982a(6) =65564a(7) =139730a(8) =299064a(9) =620638a(10) =1251316a(11) =2595908a(12) =5260942a(13) =10606968a(14) =21437670a(15) =42824016a(16) =86024822a(17) =171420110a(18) =340644210a(19) =678395210a(20) =1341990252a(21) =2658199478a(22) =5253155166a(23) =10354111212a(24) =20425614060
External references
- oeis: A207681