Number of nX6 0..3 arrays with no element equal to another within two positions in the same row or column, and new values 0..3 introduced in row major order.
A206690
Number of nX6 0..3 arrays with no element equal to another within two positions in the same row or column, and new values 0..3 introduced in row major order.
Terms
- a(0) =8a(1) =376a(2) =2816a(3) =24492a(4) =213788a(5) =1915580a(6) =17277556a(7) =156946368a(8) =1429962032a(9) =13057140562a(10) =119353104128
External references
- oeis: A206690