Number of nX3 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor.
A199251
Number of nX3 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =14a(2) =114a(3) =447a(4) =16898a(5) =311216a(6) =2913528a(7) =11312517a(8) =551973865a(9) =11307744507a(10) =111458340272a(11) =438326135133
External references
- oeis: A199251