167334

Appears in sequences

• Composite numbers k such that sigma(k) / d(k) is prime.at n=39A048969
• p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - S^3 - S^6.at n=22A291407
• Numbers q.r such that q*r divides q.r, when q and r have the same number of digits, "." means concatenation, and r may not begin with 0.at n=8A347541
• a(n) = (10^n+2)^2 / 6.at n=2A348589