123445

Appears in sequences

• a(n) = min{p + q + r + ...} where p,q,r,... are distinct unary numbers - containing only ones, i.e., of the form (10^k - 1)/9 - formed by using a total of n ones.at n=18A110380
• Triangle read by rows, a generalization of the Bernoulli numbers, the numerators for n>=0 and 0<=k<=n.at n=31A292900
• Partial sums of A299256.at n=43A299262
• Number of dominating sets in the n-Cameron graph.at n=2A387433