Number of 3Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than or equal to itself.
A266057
Number of 3Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than or equal to itself.
Terms
- a(0) =1a(1) =35a(2) =20a(3) =302a(4) =10310a(5) =127492a(6) =1590691a(7) =20375630a(8) =280811810a(9) =3864301448a(10) =50179179330a(11) =655917215158
External references
- oeis: A266057