Number of nX4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically.
A207841
Number of nX4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically.
Terms
- a(0) =10a(1) =100a(2) =180a(3) =780a(4) =2816a(5) =9672a(6) =35952a(7) =130152a(8) =462660a(9) =1691356a(10) =6097536a(11) =21894544a(12) =79589224a(13) =286756120a(14) =1033424532a(15) =3745763500a(16) =13500573120a(17) =48729856032a(18) =176324800080a(19) =635878928776
External references
- oeis: A207841