Random triples
| Subject | Object |
|---|---|
| gptkb:OEIS_A000372 | a(n) = Sum_{k=1..binomial(n,2)} binomial(binomial(n,2),k) * c(n,k), where c(n,k) is the number of connected graphs with n nodes and k edges. |
| gptkb:OEIS_A000372 | a(n) = Sum_{k=1..2^(n*(n-1)/2)} [graph with n nodes and k edges is connected] |