Number of n X 3 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.
A207559
Number of n X 3 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.
Terms
- a(0) =6a(1) =36a(2) =92a(3) =221a(4) =618a(5) =1690a(6) =4861a(7) =13900a(8) =40452a(9) =117717a(10) =345002a(11) =1012682a(12) =2983173a(13) =8803252a(14) =26036140a(15) =77123437a(16) =228815946a(17) =679742490a(18) =2021736365a(19) =6019369820a(20) =17938267476a(21) =53500929061a(22) =159681492682a(23) =476893979146
External references
- oeis: A207559