Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303244
Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =3a(2) =55a(3) =10a(4) =255a(5) =149a(6) =1676a(7) =3307a(8) =18505a(9) =65498a(10) =290437a(11) =1198777a(12) =5087180a(13) =21490967a(14) =90839013a(15) =384340750a(16) =1625471539a(17) =6876513885a(18) =29091034026a(19) =123070552817a(20) =520674602677
External references
- oeis: A303244