Number of nX6 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or two horizontal or vertical neighbors.
A199244
Number of nX6 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or two horizontal or vertical neighbors.
Terms
- a(0) =5a(1) =39a(2) =472a(3) =7100a(4) =106134a(5) =1682457a(6) =27337776a(7) =454364514a(8) =7678775057a(9) =131559174015
External references
- oeis: A199244