Irregular triangular array read by rows: T(n,k) = number of non-isomorphic unlabeled connected graphs with loops on n nodes and with k edges.
A283755
Irregular triangular array read by rows: T(n,k) = number of non-isomorphic unlabeled connected graphs with loops on n nodes and with k edges.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =3a(8) =2a(9) =1a(10) =2a(11) =6a(12) =11a(13) =13a(14) =10a(15) =5a(16) =2a(17) =1a(18) =3a(19) =14a(20) =35a(21) =61a(22) =75a(23) =68a(24) =49a(25) =28a(26) =13a(27) =5a(28) =2a(29) =1
External references
- oeis: A283755