Number of 4Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.
A207565
Number of 4Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.
Terms
- a(0) =9a(1) =81a(2) =221a(3) =636a(4) =2234a(5) =6315a(6) =16812a(7) =47596a(8) =129150a(9) =337186a(10) =892181a(11) =2343529a(12) =6046508a(13) =15601217a(14) =40205083a(15) =102833093a(16) =262404045a(17) =669166152a(18) =1701139222a(19) =4316129307a(20) =10943611348a(21) =27709283328a(22) =70072708774a(23) =177098593806a(24) =447280003769
External references
- oeis: A207565