Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222496
Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =3a(1) =5a(2) =35a(3) =346a(4) =6109a(5) =101272a(6) =1809959a(7) =30640551a(8) =555968545a(9) =9536953884a(10) =171781998471
External references
- oeis: A222496