238560

Appears in sequences

• Molecular topological index of the Andrásfai graphs.at n=23A192790
• Numbers k such that 11^phi(k) == 1 (mod k^2), where phi(k) = A000010(k).at n=28A253016
• Triangle read by rows: T(n,k) is the number of balanced reduced multisystems of weight n with maximum depth and atoms colored using exactly k colors.at n=25A330778
• Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + 2*(k+1)!*Sum_{j=0..k} A(n-1,j)/j! with A(0,k) = 2*(k+1)!, n >= 0, k >= 0.at n=23A379459
• Value of T[2] after the n-th iteration, when the map T is initialized with T[1] = 1 and in subsequent iterations, T[v] = k + (T[v] if defined else 0) for all key-value pairs (k, v) in T; a(n) = 0 if T[2] isn't defined yet.at n=22A390942