Equals one maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..3 nX3 array.
A221630
Equals one maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..3 nX3 array.
Terms
- a(0) =4a(1) =37a(2) =395a(3) =3575a(4) =30145a(5) =247495a(6) =2003761a(7) =16117917a(8) =129240286a(9) =1034701626a(10) =8277555240a(11) =66195137589a(12) =529260702037
External references
- oeis: A221630