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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A257413 Values of n such that there are exactly 6 solutions to x^2 - y^2 = n with x > y >= 0.

Table of values

n a(n)
1 240
2 288
3 315
4 336
5 360
6 384
7 432
8 495
9 504
10 525
11 528
12 560
13 585
14 600
15 624
16 640
17 675
18 693
19 735
20 765
21 792
22 800
23 816
24 819
25 825
26 855
27 880
28 896
29 912
30 936
31 975
32 1035
33 1040
34 1071
35 1104
36 1125
37 1176
38 1197
39 1215
40 1224
41 1232
42 1260
43 1275
44 1287
45 1305
46 1323
47 1360
48 1368

List of values

[240, 288, 315, 336, 360, 384, 432, 495, 504, 525, 528, 560, 585, 600, 624, 640, 675, 693, 735, 765, 792, 800, 816, 819, 825, 855, 880, 896, 912, 936, 975, 1035, 1040, 1071, 1104, 1125, 1176, 1197, 1215, 1224, 1232, 1260, 1275, 1287, 1305, 1323, 1360, 1368]