Triangular array read by rows T(n,k) is the number of simple labeled graphs on n nodes with exactly k isolated nodes, 0<=k<=n.

A198261

Triangular array read by rows T(n,k) is the number of simple labeled graphs on n nodes with exactly k isolated nodes, 0<=k<=n.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =4a(7) =3a(8) =0a(9) =1a(10) =41a(11) =16a(12) =6a(13) =0a(14) =1a(15) =768a(16) =205a(17) =40a(18) =10a(19) =0a(20) =1a(21) =27449a(22) =4608a(23) =615a(24) =80a(25) =15a(26) =0a(27) =1a(28) =1887284a(29) =192143

External references