207935

Appears in sequences

• Composite numbers n such that b^(n+1) == 1 (mod n) for every b coprime to n.at n=31A208728
• Fourth diagonal sequence of the Sheffer triangle A094816 (special Charlier).at n=12A290313
• a(n) is the smallest number m such that tau(m+1) = tau(m) + n.at n=47A343018
• Numbers k such that k and k+1 are both terms in A377209.at n=36A377271