Number of polyhexes with n cells without holes that do not tile the plane.

A070768

Number of polyhexes with n cells without holes that do not tile the plane.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =4a(6) =37a(7) =381a(8) =2717a(9) =18760a(10) =116439a(11) =565943a(12) =3033697a(13) =14835067a(14) =72633658a(15) =356923880a(16) =1746833634a(17) =8532601529a(18) =41868336466a(19) =205618704167

External references