Number of nX4 0..7 arrays with no element equal to another at a city block distance of exactly two, and new values 0..7 introduced in row major order.
A222893
Number of nX4 0..7 arrays with no element equal to another at a city block distance of exactly two, and new values 0..7 introduced in row major order.
Terms
- a(0) =7a(1) =389a(2) =84521a(3) =46407465a(4) =30122054696
External references
- oeis: A222893