Triangle T(n,k) of series-reduced (or homeomorphically irreducible) labeled graphs with n nodes and k edges, k=0..binomial(n,2).

A060514

Triangle T(n,k) of series-reduced (or homeomorphically irreducible) labeled graphs with n nodes and k edges, k=0..binomial(n,2).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =0a(7) =0a(8) =1a(9) =6a(10) =3a(11) =4a(12) =0a(13) =0a(14) =1a(15) =1a(16) =10a(17) =15a(18) =20a(19) =5a(20) =0a(21) =5a(22) =20a(23) =15a(24) =10a(25) =1a(26) =1a(27) =15a(28) =45a(29) =75

External references