Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.
A222631
Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.
Terms
- a(0) =4a(1) =10a(2) =34a(3) =161a(4) =707a(5) =3309a(6) =16892a(7) =89384a(8) =465258a(9) =2414240a(10) =12658133a(11) =66882546a(12) =353898321a(13) =1874207359a(14) =9950624881a(15) =52968141606a(16) =282452336722
External references
- oeis: A222631