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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.

A198775 Numbers having exactly four representations by the quadratic form x^2+xy+y^2 with 0<=x<=y.

Table of values

n a(n)
1 1729
2 2821
3 3367
4 3913
5 4123
6 4459
7 4921
8 5187
9 5551
10 5719
11 6097
12 6517
13 6643
14 6916
15 7189
16 7657
17 8029
18 8113
19 8463
20 8827
21 8911
22 9139
23 9331
24 9373
25 9709
26 9919
27 10101
28 10507
29 10621
30 10633
31 11137
32 11284
33 11557
34 11739
35 12369
36 12649
37 12691
38 12901
39 13237
40 13377

List of values

[1729, 2821, 3367, 3913, 4123, 4459, 4921, 5187, 5551, 5719, 6097, 6517, 6643, 6916, 7189, 7657, 8029, 8113, 8463, 8827, 8911, 9139, 9331, 9373, 9709, 9919, 10101, 10507, 10621, 10633, 11137, 11284, 11557, 11739, 12369, 12649, 12691, 12901, 13237, 13377]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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