Number of defective 4-colorings of an n X 5 0..3 array connected horizontally, antidiagonally and vertically with exactly one mistake, and colors introduced in row-major 0..3 order.
A229476
Number of defective 4-colorings of an n X 5 0..3 array connected horizontally, antidiagonally and vertically with exactly one mistake, and colors introduced in row-major 0..3 order.
Terms
- a(0) =20a(1) =1312a(2) =23964a(3) =360912a(4) =5068384a(5) =68447552a(6) =900320160a(7) =11614790144a(8) =147614682208
External references
- oeis: A229476