Number of 5Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.
A207920
Number of 5Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.
Terms
- a(0) =16a(1) =256a(2) =1152a(3) =5371a(4) =21145a(5) =86255a(6) =366330a(7) =1520815a(8) =6276388a(9) =26127518a(10) =108694123a(11) =451081599a(12) =1873587315a(13) =7785944494a(14) =32343169917a(15) =134348128428a(16) =558128458658
External references
- oeis: A207920