269360

Appears in sequences

• List of pairs of consecutive refactorable numbers.at n=16A036898
• Numbers k such that k and k+1 are both refactorable numbers.at n=8A114617
• Triangle read by rows: T(n,k) = number of homeomorphically irreducible connected labeled graphs with n edges and k vertices, n >= 0, 1 <= k <= n+1.at n=62A331437
• Irregular triangle read by rows: T(n,k) = number of homeomorphically irreducible connected labeled graphs with n vertices and k edges, n >= 1, 0 <= k <= n*(n-1)/2.at n=73A331438