Number of nX4 0..5 arrays with no element equal to another at a city block distance of exactly two, and new values 0..5 introduced in row major order.
A222870
Number of nX4 0..5 arrays with no element equal to another at a city block distance of exactly two, and new values 0..5 introduced in row major order.
Terms
- a(0) =7a(1) =370a(2) =30528a(3) =2903520a(4) =276768768a(5) =26393020608
External references
- oeis: A222870