122525

Appears in sequences

• Numbers that are the sum of 2 nonzero squares in exactly 9 ways.at n=2A025292
• Numbers that are the sum of 2 nonzero squares in 9 or more ways.at n=2A025300
• Numbers that are the sum of 2 distinct nonzero squares in exactly 9 ways.at n=2A025310
• Numbers that are the sum of 2 distinct nonzero squares in 9 or more ways.at n=2A025319
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 28.at n=24A031706
• a(n) = T(n)^2 - n^2, where T(n) is a triangular number.at n=26A085740
• Numbers k that are the hypotenuse of exactly 37 distinct integer-sided right triangles, i.e., k^2 can be written as a sum of two squares in 37 ways.at n=2A097245
• a(n) = 625*n^2 + 25.at n=13A157915
• The smallest number k that can be partitioned in n ways as the sum of two numbers from A020487.at n=18A369384