Number of unlabeled simple graphs with n nodes of 2 colors whose components are path graphs.

Terms

a(0) =1a(1) =2a(2) =6a(3) =16a(4) =42a(5) =106a(6) =267a(7) =656a(8) =1602a(9) =3868a(10) =9270a(11) =22048a(12) =52140a(13) =122580a(14) =286798a(15) =667944a(16) =1549259a(17) =3579738a(18) =8242638a(19) =18917600a(20) =43286909a(21) =98768820a(22) =224768425a(23) =510235760a(24) =1155553468a(25) =2611251662a(26) =5888421059a(27) =13252176464a(28) =29768501556a(29) =66749440076