Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
A207737
Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =9a(1) =81a(2) =361a(3) =1849a(4) =10201a(5) =58081a(6) =335241a(7) =1946025a(8) =11323225a(9) =65950641a(10) =384277609a(11) =2239466329a(12) =13051920025a(13) =76070604481a(14) =443368207881
External references
- oeis: A207737