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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.

A088535 n representable as x^2+xy+y^2 and such that 3 divides sigma(n).

Table of values

n a(n)
1 49
2 147
3 169
4 196
5 361
6 441
7 507
8 588
9 637
10 676
11 784
12 931
13 961
14 1083
15 1183
16 1225
17 1323
18 1369
19 1444
20 1519
21 1521
22 1764
23 1813
24 1849
25 1911
26 2028
27 2107
28 2352
29 2527
30 2548
31 2704
32 2793
33 2883
34 2989
35 3136
36 3211
37 3249
38 3283
39 3549
40 3577
41 3675
42 3721
43 3724
44 3844
45 3871

List of values

[49, 147, 169, 196, 361, 441, 507, 588, 637, 676, 784, 931, 961, 1083, 1183, 1225, 1323, 1369, 1444, 1519, 1521, 1764, 1813, 1849, 1911, 2028, 2107, 2352, 2527, 2548, 2704, 2793, 2883, 2989, 3136, 3211, 3249, 3283, 3549, 3577, 3675, 3721, 3724, 3844, 3871]

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

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