Number of 4Xn 0..3 arrays with exactly floor(4Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222503
Number of 4Xn 0..3 arrays with exactly floor(4Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =0a(1) =13a(2) =95a(3) =346a(4) =3915a(5) =43771a(6) =524135a(7) =8524766a(8) =122168747a(9) =2165841197a(10) =32515663543a(11) =574481348902
External references
- oeis: A222503