Number of (n+1) X (1+1) 0..2 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..2 introduced in row major order.
A238906
Number of (n+1) X (1+1) 0..2 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..2 introduced in row major order.
Terms
- a(0) =3a(1) =9a(2) =54a(3) =261a(4) =1341a(5) =6768a(6) =34335a(7) =173925a(8) =881406a(9) =4466169a(10) =22631337a(11) =114678144a(12) =581102091a(13) =2944583217a(14) =14920910982a(15) =75607836957a(16) =383123064069
External references
- oeis: A238906