166930

Appears in sequences

• Least integer k such that A001358(k) + A001358(k+1) is the product of exactly n prime factors (counting multiplicity).at n=19A288517
• Triangular array read by rows. T(n,k) is the number of labeled digraphs (with self loops allowed) on [n] containing exactly k primitive components, n>=0, 0<=k<=n.at n=15A365325