111392

Appears in sequences

• Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 23 (most significant digit on right).at n=21A029516
• The 2nd self-composition of A120010; g.f.: A(x) = G(G(x)), where G(x) = g.f. of A120010.at n=10A120017
• Product of the 5th power of a prime and different distinct prime of the 2nd power (p^5*q^2).at n=25A179646
• Primitive numbers whose abundance is positive and odd.at n=20A259231
• G.f. A(x) satisfies: A(x) = Sum_{j>=0} j!*x^j*A(x)^j / Product_{k=1..j} (1 - k*x).at n=7A307439
• Numbers that have exactly one Zumkeller divisor but are not Zumkeller.at n=17A376877
• a(n) is the least m > 0 such that sigma(m) - 2m = A140863(n).at n=24A380866