Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 4 1s.
A295527
Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 4 1s.
Terms
- a(0) =7a(1) =87a(2) =774a(3) =7071a(4) =64189a(5) =588529a(6) =5400933a(7) =49414072a(8) =452274232a(9) =4141178883a(10) =37915462501a(11) =347125927592
External references
- oeis: A295527