Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
A305638
Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =28a(2) =78a(3) =334a(4) =1516a(5) =6329a(6) =27110a(7) =118085a(8) =519355a(9) =2275485a(10) =10007094a(11) =44192714a(12) =194914769a(13) =860631159a(14) =3804114731a(15) =16808740747a(16) =74300020431a(17) =328513615351
External references
- oeis: A305638