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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.

A080774 Numbers with two prime factors: (4*i+1)*(4*j+3).

Table of values

n a(n)
1 15
2 35
3 39
4 51
5 55
6 87
7 91
8 95
9 111
10 115
11 119
12 123
13 143
14 155
15 159
16 183
17 187
18 203
19 215
20 219
21 235
22 247
23 259
24 267
25 287
26 291
27 295
28 299
29 303
30 319
31 323
32 327
33 335
34 339
35 355
36 371
37 391
38 395
39 403
40 407
41 411
42 415
43 427
44 447
45 451
46 471
47 511
48 515
49 519
50 527
51 535
52 543
53 551

List of values

[15, 35, 39, 51, 55, 87, 91, 95, 111, 115, 119, 123, 143, 155, 159, 183, 187, 203, 215, 219, 235, 247, 259, 267, 287, 291, 295, 299, 303, 319, 323, 327, 335, 339, 355, 371, 391, 395, 403, 407, 411, 415, 427, 447, 451, 471, 511, 515, 519, 527, 535, 543, 551]

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

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