Number of fixed polyominoids with n cells, allowing right-angled corner-connections.

A366000

Number of fixed polyominoids with n cells, allowing right-angled corner-connections.

Terms

    a(0) =3a(1) =24a(2) =344a(3) =6024a(4) =117756a(5) =2453722a(6) =53294964a(7) =1191589056

External references