Number of 3 X n arrays containing n copies of 0..3-1 with every element equal to at least one horizontal or antidiagonal neighbor and the top left element equal to 0.
A267619
Number of 3 X n arrays containing n copies of 0..3-1 with every element equal to at least one horizontal or antidiagonal neighbor and the top left element equal to 0.
Terms
- a(0) =0a(1) =2a(2) =8a(3) =42a(4) =576a(5) =5492a(6) =68958a(7) =814418a(8) =9982880a(9) =122186774a(10) =1509756240a(11) =18739734568a(12) =233756282022
External references
- oeis: A267619