Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303184
Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =81a(2) =135a(3) =297a(4) =931a(5) =2569a(6) =6668a(7) =17934a(8) =48674a(9) =131037a(10) =353419a(11) =953231a(12) =2569308a(13) =6928326a(14) =18683550a(15) =50378075a(16) =135840557a(17) =366289949a(18) =987683660a(19) =2663241442a(20) =7181313510a(21) =19364081749a(22) =52214352523a(23) =140793629575a(24) =379643605448
External references
- oeis: A303184