82134

Appears in sequences

• a(n) = ceiling(n*phi^17), where phi is the golden ratio, A001622.at n=23A004972
• Numbers n such that (phi(n) + sigma(n))/(rad(n))^2 is an integer > 1 (phi=A000010, sigma=A000203, rad=A007947).at n=7A097982
• Numbers k such that (phi(k) + sigma(k))/rad(k)^2 is an integer, that is (phi(k) + sigma(k)) is divisible by every prime factor of k squared.at n=9A121850
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 4 ones in any 3 X 3 X 3 subtriangle.at n=13A153931
• Values of n such that n^a-+a are primes, a=7.at n=24A155022
• Lower Pythagorean twins.at n=33A228876