Number of 4Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.
A232338
Number of 4Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.
Terms
- a(0) =1a(1) =42a(2) =308a(3) =734a(4) =4906a(5) =13170a(6) =82526a(7) =239992a(8) =1398710a(9) =4333362a(10) =23808020a(11) =77703762a(12) =406751730a(13) =1385692672a(14) =6971295054a(15) =24603895150a(16) =119805137680a(17) =435349233940
External references
- oeis: A232338