Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.
A207906
Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.
Terms
- a(0) =25a(1) =625a(2) =3969a(3) =19881a(4) =87025a(5) =314721a(6) =1113025a(7) =3674889a(8) =11758041a(9) =37222201a(10) =115369081a(11) =356794321a(12) =1097663161a(13) =3366900625a(14) =10334958921a(15) =31687204081a(16) =97226099721a(17) =298466635041a(18) =916505619649
External references
- oeis: A207906