Number of nX4 0..1 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..1 order.
A222505
Number of nX4 0..1 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..1 order.
Terms
- a(0) =3a(1) =3a(2) =15a(3) =84a(4) =497a(5) =2862a(6) =15420a(7) =86570a(8) =484976a(9) =2751326a(10) =15597305a(11) =89022483a(12) =508390703a(13) =2915183250a(14) =16739260404a(15) =96360825455a(16) =555513635334
External references
- oeis: A222505