Number of (n+2) X (3+2) 0..1 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..1 introduced in row major order.
A238649
Number of (n+2) X (3+2) 0..1 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..1 introduced in row major order.
Terms
- a(0) =3a(1) =18a(2) =51a(3) =189a(4) =630a(5) =2187a(6) =7473a(7) =25692a(8) =88119a(9) =302511a(10) =1038144a(11) =3563151a(12) =12228903a(13) =41971050a(14) =144048471a(15) =494389041a(16) =1696791534a(17) =5823557223a(18) =19987023645a(19) =68597444364a(20) =235433215419a(21) =808030095435
External references
- oeis: A238649