Triangle read by rows where T(n,k) is the number of labeled graphs with n vertices and k non-isolated vertices.

A370319

Triangle read by rows where T(n,k) is the number of labeled graphs with n vertices and k non-isolated vertices.

Terms

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

External references