58786560

Appears in sequences

• Numbers m such that uphi(sigma(m)) = 2m, where the unitary phi function (A047994) is defined by: if x = p1^r1*p2^r2*p3^r3*... then uphi(x) = (p1^r1 - 1)*(p2^r2 - 1)*(p3^r3 - 1)*...at n=30A030165
• Expansion of e.g.f. x*(1-x)/(1-3*x).at n=8A052700
• Smallest number whose square has (2n - 1)^2 divisors.at n=25A061708
• a(1)=2, a(n+1)=a(n)*(n-th digit of the sequence or 10 in case of digit '0').at n=12A210579
• Sequence starting with a(1) = 2 and always extended with the product "n-th digit * n-th term". When the product is = 0, we don't extend the sequence with 0 but with the smallest integer not yet present.at n=12A337109