102500

Appears in sequences

• Numbers that are the sum of 2 distinct nonzero squares in exactly 5 ways.at n=32A025306
• Numbers k such that phi(k) and cototient(k) are squares but k is not in A054755.at n=35A054756
• Fourth binomial transform of binomial(n+3, 3).at n=6A081897
• Third binomial transform of Pell(3*n)/Pell(3).at n=5A093144
• Numbers n such that phi(n)/n = 16/41.at n=23A176598
• Numbers n such that the decimal concatenations 1n and 2n are both squares.at n=1A272672
• a(n) = Sum_{d|n} max(d, n/d)^4.at n=14A297843
• a(n) is a number of lattice points in 3D Cartesian grid between cube with edge length 2*n centered in origin and its inscribed sphere. Three pairs of the cube's faces are parallel to the planes XOY, XOZ, YOZ respectively.at n=30A303743