Irregular triangle read by rows: T(n,k) is the number of unlabeled n-node graphs with intersection number (or edge clique cover number) k; n >= 1, 0 <= k <= floor(n^2/4).

A355754

Irregular triangle read by rows: T(n,k) is the number of unlabeled n-node graphs with intersection number (or edge clique cover number) k; n >= 1, 0 <= k <= floor(n^2/4).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =4a(9) =2a(10) =1a(11) =1a(12) =4a(13) =9a(14) =10a(15) =7a(16) =2a(17) =1a(18) =1a(19) =5a(20) =17a(21) =36a(22) =46a(23) =30a(24) =14a(25) =4a(26) =2a(27) =1a(28) =1a(29) =6

External references