Number of 4Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
A207444
Number of 4Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =9a(1) =81a(2) =333a(3) =1360a(4) =6092a(5) =25689a(6) =105690a(7) =439332a(8) =1821924a(9) =7521414a(10) =31063445a(11) =128325745a(12) =529821580a(13) =2187257369a(14) =9030334421a(15) =37280871533a(16) =153905038835a(17) =635365800266
External references
- oeis: A207444