235053

Appears in sequences

• G.f.: A(q) = exp( Sum_{n>=1} sigma(n) * 3*A038500(n) * q^n/n ), where A038500(n) = highest power of 3 dividing n.at n=15A163129
• A trisection of A163129.at n=5A163130
• Composite numbers whose harmonic mean of their divisors that are larger than 1 is an integer.at n=39A335267
• a(n) is the least number k such that A348213(k) = n, or -1 if no such number exists.at n=4A348214