Number of n X 4 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, vertically or antidiagonally.
A232937
Number of n X 4 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, vertically or antidiagonally.
Terms
- a(0) =24a(1) =56a(2) =252a(3) =1048a(4) =4458a(5) =18850a(6) =79810a(7) =337850a(8) =1430144a(9) =6054098a(10) =25627862a(11) =108487018a(12) =459242866a(13) =1944049234a(14) =8229473620a(15) =34836688334a(16) =147469316688a(17) =624261386538
External references
- oeis: A232937