274659
domain: N
Appears in sequences
- Number of 7-colorable (i.e., chromatic number <= 7) simple graphs on n nodes.at n=8A076319
- Squarefree numbers k such that alpha(k) = lambda(k), where alpha(k) = LCM of all (p+1) for primes p dividing k, and lambda(k) = A002322(k).at n=23A287514
- Regular triangle where T(n,k) is the number of unlabeled k-uniform hypergraphs spanning n vertices.at n=42A301922
- Regular triangle where T(n,k) is the number of unlabeled k-uniform connected hypergraphs spanning n vertices.at n=42A301924