Number of 2nX6 0..2 arrays with values 0..2 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors.
A198449
Number of 2nX6 0..2 arrays with values 0..2 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors.
Terms
- a(0) =71a(1) =1399a(2) =26704a(3) =421185a(4) =7302285a(5) =128955464a(6) =2298267371a(7) =41395566911a(8) =751621555932
External references
- oeis: A198449