Number of n X 3 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, vertically or antidiagonally.
A232936
Number of n X 3 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, vertically or antidiagonally.
Terms
- a(0) =12a(1) =26a(2) =84a(3) =252a(4) =774a(5) =2360a(6) =7212a(7) =22024a(8) =67272a(9) =205466a(10) =627562a(11) =1916768a(12) =5854418a(13) =17881234a(14) =54614930a(15) =166811210a(16) =509494028a(17) =1556155380a(18) =4752989126a(19) =14517127208a(20) =44339883148a(21) =135427981664a(22) =413639750856
External references
- oeis: A232936