Number of polycubes of size n and symmetry class EE.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =6a(6) =11a(7) =32a(8) =61a(9) =158a(10) =308a(11) =749a(12) =1481a(13) =3481a(14) =6997a(15) =16086a(16) =32692a(17) =74114a(18) =152114a(19) =341410a(20) =705978a(21) =1573062a(22) =3273527a(23) =7253791