Number of nX4 0..1 arrays avoiding 0 0 0 horizontally and 1 0 1 vertically.
A206867
Number of nX4 0..1 arrays avoiding 0 0 0 horizontally and 1 0 1 vertically.
Terms
- a(0) =13a(1) =169a(2) =1153a(3) =7675a(4) =55063a(5) =397221a(6) =2841311a(7) =20294131a(8) =145066667a(9) =1037297447a(10) =7416956341a(11) =53030329081a(12) =379156174051
External references
- oeis: A206867