Number of nX2 0..2 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
A222980
Number of nX2 0..2 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =1a(1) =4a(2) =14a(3) =70a(4) =326a(5) =1630a(6) =8058a(7) =40598a(8) =204914a(9) =1041934a(10) =5315674a(11) =27228710a(12) =139873618a(13) =720480478a(14) =3719466954a(15) =19240428310a(16) =99703918274a(17) =517480871374
External references
- oeis: A222980