Number of simple labeled graphs on n+4 nodes with exactly n connected components that are trees or cycles.

A215864

Number of simple labeled graphs on n+4 nodes with exactly n connected components that are trees or cycles.

Terms

    a(0) =0a(1) =137a(2) =1267a(3) =6412a(4) =23597a(5) =70707a(6) =183099a(7) =424809a(8) =904299a(9) =1795794a(10) =3367364a(11) =6017011a(12) =10318126a(13) =17075786a(14) =27395466a(15) =42765846a(16) =65157498a(17) =97139343a(18) =142014873a(19) =203980238a(20) =288306403a(21) =401547685a(22) =551779085a(23) =748864935a(24) =1004761485a(25) =1333856160a(26) =1753346322a(27) =2283660477

External references