Number of nX4 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A317892
Number of nX4 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =2a(2) =13a(3) =82a(4) =549a(5) =3697a(6) =25169a(7) =170608a(8) =1156219a(9) =7839519a(10) =53154565a(11) =360388169a(12) =2443433405a(13) =16566593998a(14) =112322259076a(15) =761549454562
External references
- oeis: A317892