297335

Appears in sequences

• Smallest k such that |M(k)| = n^2, where M(x) is Mertens's function A002321.at n=12A084234
• Triangle T(n,k), 0<=k<=n, read by rows; given by [0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, ...] DELTA [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...] where DELTA is the operator defined in A084938.at n=63A094456