Number of nX4 0..2 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
A222427
Number of nX4 0..2 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =3a(1) =13a(2) =75a(3) =766a(4) =7929a(5) =88455a(6) =1009168a(7) =11742060a(8) =136046418a(9) =1597242853a(10) =18702751927a(11) =220911842244
External references
- oeis: A222427