Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.
A207463
Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.
Terms
- a(0) =9a(1) =81a(2) =271a(3) =1307a(4) =5369a(5) =23645a(6) =101233a(7) =439063a(8) =1893511a(9) =8183735a(10) =35331965a(11) =152610763a(12) =659074589a(13) =2846603441a(14) =12294305751a(15) =53098868971a(16) =229330454403a(17) =990464516749
External references
- oeis: A207463