Number of nX3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, diagonally or antidiagonally.
A232146
Number of nX3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, diagonally or antidiagonally.
Terms
- a(0) =7a(1) =191a(2) =3669a(3) =67311a(4) =1270511a(5) =23931701a(6) =450210003a(7) =8472530835a(8) =159447698709
External references
- oeis: A232146