Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A320397
Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =28a(2) =142a(3) =732a(4) =3694a(5) =18754a(6) =94842a(7) =480321a(8) =2431390a(9) =12309913a(10) =62320210a(11) =315508545a(12) =1597316261a(13) =8086701105a(14) =40940363689a(15) =207267894413
External references
- oeis: A320397