Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 0 vertically.
A207705
Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 0 vertically.
Terms
- a(0) =8a(1) =64a(2) =216a(3) =729a(4) =3321a(5) =15129a(6) =61254a(7) =248004a(8) =1050282a(9) =4447881a(10) =18510693a(11) =77035729a(12) =322765398a(13) =1352327076a(14) =5651244450a(15) =23616005625a(16) =98788590675a(17) =413244551281
External references
- oeis: A207705