Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
A207742
Number of 4Xn 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) =387a(3) =1849a(4) =10535a(5) =60025a(6) =327075a(7) =1782225a(8) =9840285a(9) =54331641a(10) =298827711a(11) =1643572681a(12) =9050656627a(13) =49839223009a(14) =274344889595
External references
- oeis: A207742