Number of nX2 0..2 arrays with exactly floor(nX2/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
A222885
Number of nX2 0..2 arrays with exactly floor(nX2/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =0a(1) =4a(2) =22a(3) =184a(4) =1222a(5) =9918a(6) =73038a(7) =571736a(8) =4390202a(9) =34351802a(10) =267982304a(11) =2106587634a(12) =16576619646a(13) =130932847630
External references
- oeis: A222885