47526

Appears in sequences

• Decimal part of a(n)^(1/5) starts with a 'nine digits' anagram.at n=25A034280
• Composite numbers k such that sigma(k) / d(k) is prime.at n=28A048969
• usigma(n) = 2n + d(n), where d(n) is the number of divisors of n.at n=22A063829
• Sum_{k=2..n} min(k,n-k)*phi(k)*(n-k).at n=35A092274
• Largest achievable determinant of a 3 X 3 matrix whose elements are 9 distinct integers chosen from the range -n...n.at n=20A097693
• Numbers n such that P(13*n) is prime, where P(n) is the unrestricted partition number.at n=25A113518
• a(n) is the sum of the smallest parts of all partitions of n that do not contain 1 as a part.at n=46A182708
• Hyper-Wiener index of a benzenoid consisting of a spiral chain of n hexagons (s=1; see the Gutman et al. reference).at n=12A193392
• Upper Pythagorean twins.at n=24A228877
• Numbers k such that s(k) = 2*k, where s(k) is the sum of divisors of k that have a square factor (A162296).at n=27A322609
• Primitive terms of A051487.at n=24A346694
• Numbers k such that sigma(k) = psi(k) + tau(k).at n=46A387953