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.

A177204 Pseudoperfect totient numbers (A288452) which are not powers of primes (A000961).

Table of values

n a(n)
1 15
2 33
3 35
4 39
5 51
6 55
7 65
8 69
9 77
10 85
11 87
12 111
13 115
14 119
15 123
16 141
17 143
18 153
19 155
20 159
21 161
22 175
23 177
24 183
25 187
26 201
27 205
28 209
29 213
30 219
31 221
32 235
33 245
34 247
35 249
36 253
37 255
38 265
39 267
40 287
41 291
42 295
43 299
44 303
45 305
46 309
47 319
48 321
49 323
50 325
51 327
52 329
53 339
54 341
55 363
56 371
57 377
58 391
59 393
60 403
61 407
62 411
63 413
64 415

List of values

[15, 33, 35, 39, 51, 55, 65, 69, 77, 85, 87, 111, 115, 119, 123, 141, 143, 153, 155, 159, 161, 175, 177, 183, 187, 201, 205, 209, 213, 219, 221, 235, 245, 247, 249, 253, 255, 265, 267, 287, 291, 295, 299, 303, 305, 309, 319, 321, 323, 325, 327, 329, 339, 341, 363, 371, 377, 391, 393, 403, 407, 411, 413, 415]

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

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