Number of polykites with n cells.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =27a(5) =85a(6) =262a(7) =873a(8) =2917a(9) =10011a(10) =34561a(11) =120815a(12) =424468a(13) =1501441a(14) =5334181a(15) =19035075a(16) =68167472a(17) =244928324a(18) =882555803a(19) =3188480899a(20) =11546307356a(21) =41901879156a(22) =152359984459a(23) =554991766194