Number of free hexagonal polygons of symmetry class C_(3h) and area n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =1a(7) =0a(8) =5a(9) =5a(10) =0a(11) =21a(12) =26a(13) =0a(14) =95a(15) =118a(16) =0a(17) =423a(18) =543a(19) =0a(20) =1923a(21) =2507a(22) =0a(23) =8869a(24) =11676a(25) =0a(26) =41410a(27) =54893a(28) =0a(29) =195353