Number of 4Xn 0..2 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..2 order.
A222491
Number of 4Xn 0..2 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..2 order.
Terms
- a(0) =0a(1) =13a(2) =85a(3) =270a(4) =2373a(5) =17095a(6) =145019a(7) =1271237a(8) =12273588a(9) =113823904a(10) =1131311866a(11) =10543094777a(12) =105359579523a(13) =985710462356
External references
- oeis: A222491