Equals one maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 2Xn array.
A220917
Equals one maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 2Xn array.
Terms
- a(0) =1a(1) =8a(2) =37a(3) =165a(4) =749a(5) =3279a(6) =13865a(7) =57374a(8) =233955a(9) =945919a(10) =3806673a(11) =15279785a(12) =61241380a(13) =245248287a(14) =981633428a(15) =3927941234a(16) =15714642964a(17) =62863639188a(18) =251459531333
External references
- oeis: A220917