Number of 4Xn 0..1 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..1 order.
A222512
Number of 4Xn 0..1 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..1 order.
Terms
- a(0) =0a(1) =11a(2) =35a(3) =84a(4) =423a(5) =1753a(6) =8489a(7) =39873a(8) =200999a(9) =988455a(10) =5011027a(11) =24887392a(12) =126164927a(13) =633230135a(14) =3213998827a(15) =16234077336a(16) =82517378821a(17) =418670560481
External references
- oeis: A222512