Number of 3 X n arrays containing n copies of 0..3-1 with every element equal to at least one diagonal or antidiagonal neighbor and the top left element equal to 0.
A268143
Number of 3 X n arrays containing n copies of 0..3-1 with every element equal to at least one diagonal or antidiagonal neighbor and the top left element equal to 0.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =8a(4) =32a(5) =238a(6) =1488a(7) =9778a(8) =91628a(9) =685364a(10) =5183732a(11) =43292440a(12) =341958992a(13) =2698310688a(14) =22015262376a(15) =177423576662
External references
- oeis: A268143