133706

Appears in sequences

• 2-nadirs of sigma: numbers k such that sigma(k-2) > sigma(k-1) > sigma(k) < sigma(k+1) < sigma(k+2).at n=7A076774
• Engel expansion of 1/phi to the base Pi.at n=5A280096
• Number of (not necessarily maximal) cliques in the n-odd graph.at n=8A295934