Number of 3Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 0 1 vertically.

A207763

Number of 3Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 0 1 vertically.

Terms

    a(0) =6a(1) =36a(2) =82a(3) =221a(4) =493a(5) =1095a(6) =2654a(7) =6203a(8) =14182a(9) =33242a(10) =77781a(11) =180207a(12) =419683a(13) =979186a(14) =2277663a(15) =5301348a(16) =12351370a(17) =28755901a(18) =66942929a(19) =155895195a(20) =362997882a(21) =845159395a(22) =1967953186a(23) =4582333234a(24) =10669471213a(25) =24843252803a(26) =57846384111

External references