51214

Appears in sequences

• Least k such that decimal representation of k*n contains only digits 0 and 2.at n=42A096681
• Sum T(n,k) of the entries in the k-th last cycles of all permutations of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=22A286231
• a(n) = (1/2)*A291417(n).at n=7A291462