296875

Appears in sequences

• 3-automorphic numbers ending in 5: final digits of 3*n^2 agree with n.at n=5A030986
• Numbers n that are the hypotenuse of exactly 6 distinct integer-sided right triangles, i.e., n^2 can be written as a sum of two squares in 6 ways.at n=13A097219
• Number of zero-sum -n..n arrays of 5 elements with first through fourth differences also in -n..n.at n=28A201440
• Numbers m such that m, m' and m'' are in arithmetic progression, where m' and m'' are the first and second arithmetic derivatives of m.at n=36A212409
• 3-automorphic numbers: positive integers k such that 3k^2 ends with k.at n=15A383821