138125

Appears in sequences

• Smallest number that is the sum of 2 squares (allowing zeros) in exactly n ways.at n=9A000446
• Smallest number that is the sum of 2 squares in at least n ways.at n=9A000448
• a(n) is the smallest number greater than a(n-1) that is expressible as the sum of two squares in more ways than a(n-1).at n=7A007511
• Least positive integer that is the sum of two squares of positive integers in exactly n ways.at n=9A016032
• Smallest k such that circle x^2 + y^2 = k passes through exactly 4n integer points.at n=19A018782
• Numbers that are the sum of 2 nonzero squares in exactly 10 ways.at n=0A025293
• Numbers that are the sum of 2 nonzero squares in 9 or more ways.at n=3A025300
• Numbers that are the sum of 2 nonzero squares in 10 or more ways.at n=0A025301
• Numbers that are the sum of 2 distinct nonzero squares in exactly 10 ways.at n=0A025311
• Numbers that are the sum of 2 distinct nonzero squares in 9 or more ways.at n=3A025319
• Numbers that are the sum of 2 distinct nonzero squares in 10 or more ways.at n=0A025320
• Smallest number that is the sum of two positive squares in >= n ways.at n=9A048610
• Numbers that are expressible as the sum of 2 distinct positive squares in more ways than any smaller number.at n=8A052199
• Numbers of the form q1^b1 * q2^b2 * q3^b3 * q4^b4 * q5^b5 * ... where q1=5, q2=13, q3=17, q4=29, q5=37, ... (A002144) and b1 >= b2 >= b3 >= b4 >= b5 >= ....at n=21A054994
• Numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^3 where w, x, y, and z are all positive integers.at n=36A057370
• a(0) = 1; a(n) = Sum_{1 <= k <= n and k|n} a(n-k).at n=25A067951
• Squared radii of the circles around (0,0) that contain record numbers of lattice points.at n=11A071383
• Numbers k such that S(k)=d(k), where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005).at n=37A073307
• Trajectory of 290 under the Reverse and Add! operation carried out in base 4, written in base 10.at n=8A075299
• Least number which is the sum of two distinct nonzero squares in exactly n ways.at n=9A093195