Equals one maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 2Xn array.
A221063
Equals one maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 2Xn array.
Terms
- a(0) =1a(1) =8a(2) =37a(3) =172a(4) =771a(5) =3392a(6) =14569a(7) =61210a(8) =252491a(9) =1028162a(10) =4152903a(11) =16695976a(12) =66953537a(13) =268144582a(14) =1073206163a(15) =4293994258a(16) =17178121515a(17) =68716367280a(18) =274872418553
External references
- oeis: A221063