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.

A063534 Numbers k such that C(k) = H(k) + d(k), where C(k) is Chowla's function A048050, H(k) is the half-totient function A023022 and d(k) is the number of divisors function A000005.

Table of values

n a(n)
1 6
2 8
3 15
4 21
5 33
6 39
7 51
8 57
9 69
10 87
11 93
12 111
13 123
14 129
15 141
16 159
17 177
18 183
19 201
20 213
21 219
22 237
23 249
24 267
25 291
26 303
27 309
28 321
29 327
30 339
31 381
32 393
33 411
34 417
35 447
36 453
37 471
38 489
39 501
40 519
41 537
42 543
43 573
44 579
45 591
46 597
47 633
48 669
49 681
50 687
51 699
52 717
53 723
54 753

List of values

[6, 8, 15, 21, 33, 39, 51, 57, 69, 87, 93, 111, 123, 129, 141, 159, 177, 183, 201, 213, 219, 237, 249, 267, 291, 303, 309, 321, 327, 339, 381, 393, 411, 417, 447, 453, 471, 489, 501, 519, 537, 543, 573, 579, 591, 597, 633, 669, 681, 687, 699, 717, 723, 753]

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

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