Number of nX3 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281649
Number of nX3 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =1a(1) =70a(2) =985a(3) =10572a(4) =104815a(5) =982206a(6) =8921869a(7) =79152992a(8) =690169163a(9) =5936924514a(10) =50519131945a(11) =426076889988
External references
- oeis: A281649