Number of simple labeled graphs on n+2 nodes with exactly n connected components that are trees or cycles.

A215862

Number of simple labeled graphs on n+2 nodes with exactly n connected components that are trees or cycles.

Terms

    a(0) =0a(1) =4a(2) =19a(3) =55a(4) =125a(5) =245a(6) =434a(7) =714a(8) =1110a(9) =1650a(10) =2365a(11) =3289a(12) =4459a(13) =5915a(14) =7700a(15) =9860a(16) =12444a(17) =15504a(18) =19095a(19) =23275a(20) =28105a(21) =33649a(22) =39974a(23) =47150a(24) =55250a(25) =64350a(26) =74529a(27) =85869a(28) =98455a(29) =112375

External references