Number of nX4 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
A280957
Number of nX4 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =11a(1) =205a(2) =1554a(3) =14106a(4) =126267a(5) =1121528a(6) =9986376a(7) =88940022a(8) =791997382a(9) =7052519878a(10) =62801413162a(11) =559236961207
External references
- oeis: A280957