Number of defective 4-colorings of an n X 7 0..3 array connected horizontally, antidiagonally and vertically with exactly one mistake, and colors introduced in row-major 0..3 order.
A229478
Number of defective 4-colorings of an n X 7 0..3 array connected horizontally, antidiagonally and vertically with exactly one mistake, and colors introduced in row-major 0..3 order.
Terms
- a(0) =246a(1) =31232a(2) =1077588a(3) =31875248a(4) =900320160a(5) =24789931648a(6) =670127758336
External references
- oeis: A229478