cp's OEIS Frontend

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.

A202237 Odd numbers with the same number of prime factors of the form 4*k+1 and 4*k+3.

Table of values

n a(n)
1 1
2 15
3 35
4 39
5 51
6 55
7 87
8 91
9 95
10 111
11 115
12 119
13 123
14 143
15 155
16 159
17 183
18 187
19 203
20 215
21 219
22 225
23 235
24 247
25 259
26 267
27 287
28 291
29 295
30 299
31 303
32 319
33 323
34 327
35 335
36 339
37 355
38 371
39 391
40 395
41 403
42 407
43 411
44 415
45 427
46 447
47 451
48 471
49 511
50 515
51 519
52 525
53 527
54 535
55 543
56 551

List of values

[1, 15, 35, 39, 51, 55, 87, 91, 95, 111, 115, 119, 123, 143, 155, 159, 183, 187, 203, 215, 219, 225, 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, 525, 527, 535, 543, 551]

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

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