Number of equivalence classes of convex lattice polygons of genus n.

Terms

a(0) =16a(1) =45a(2) =120a(3) =211a(4) =403a(5) =714a(6) =1023a(7) =1830a(8) =2700a(9) =3659a(10) =6125a(11) =8101a(12) =11027a(13) =17280a(14) =21499a(15) =28689a(16) =43012a(17) =52736a(18) =68557a(19) =97733a(20) =117776a(21) =152344a(22) =209409a(23) =248983a(24) =319957a(25) =420714a(26) =497676a(27) =641229a(28) =813814a(29) =957001