Number of fixed polykites with n cells.

Terms

a(0) =6a(1) =12a(2) =32a(3) =93a(4) =288a(5) =926a(6) =3048a(7) =10209a(8) =34694a(9) =119271a(10) =413844a(11) =1446881a(12) =5090694a(13) =18007935a(14) =64000106a(15) =228389088a(16) =817976316a(17) =2939029154a(18) =10590554976