Number of singular points on n-th order Chmutov surface.

Terms

a(0) =0a(1) =1a(2) =3a(3) =14a(4) =28a(5) =57a(6) =93a(7) =154a(8) =216a(9) =321a(10) =425a(11) =576a(12) =732a(13) =949a(14) =1155a(15) =1450a(16) =1728a(17) =2097a(18) =2457a(19) =2926a(20) =3360a(21) =3941a(22) =4477a(23) =5160a(24) =5808a(25) =6625a(26) =7371a(27) =8334a(28) =9212a(29) =10305