Number of 4Xn 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301844
Number of 4Xn 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =128a(2) =773a(3) =5748a(4) =39703a(5) =281758a(6) =1986213a(7) =14047365a(8) =99396932a(9) =703490647a(10) =4979239708a(11) =35242914039a(12) =249447707376
External references
- oeis: A301844