38845

Appears in sequences

• Composite numbers n such that sigma(n)+12 = sigma(n+12).at n=11A054902
• Number of ordered triples (a, b, c) with gcd(a, b, c) = 1 and 1 <= {a, b, c} <= n.at n=35A071778
• a(n) = floor((a(n-2)*a(n-1))/(a(n-1)+a(n-2))) + a(n-1) + a(n-2), a(0) = 0, a(1) = 1, a(2) = 1, ...at n=19A096080
• Numbers k such that 3k-4, 3k-2, 3k+2, and 3k+4 are primes.at n=40A173092
• Numbers with 3 prime factors a < b < c such that 2c = a^4 + b^2.at n=5A261657