Number of nX4 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
A207438
Number of nX4 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =9a(1) =81a(2) =323a(3) =1360a(4) =6525a(5) =32393a(6) =165626a(7) =855471a(8) =4449491a(9) =23211486a(10) =121314285a(11) =634633939a(12) =3321850282a(13) =17392770603a(14) =91082814851a(15) =477033173168
External references
- oeis: A207438