Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300636
Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =37a(2) =91a(3) =300a(4) =1130a(5) =4418a(6) =17607a(7) =71861a(8) =297729a(9) =1239693a(10) =5164437a(11) =21502279a(12) =89761068a(13) =375474518a(14) =1571013994a(15) =6575412382a(16) =27531230134a(17) =115292976778a(18) =482850728454
External references
- oeis: A300636