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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.

A247316 Numbers x such that the sum of all their cyclic permutations is equal to that of all cyclic permutations of their Euler totient functions phi(x).

Table of values

n a(n)
1 1
2 21
3 27
4 34
5 54
6 63
7 81
8 171
9 205
10 212
11 214
12 237
13 243
14 272
15 291
16 315
17 324
18 333
19 342
20 351
21 356
22 358
23 394
24 402
25 405
26 424
27 432
28 441
29 459
30 493
31 502
32 504
33 513
34 538
35 540
36 544
37 565
38 585
39 624
40 630
41 663
42 702
43 712
44 714
45 716
46 718
47 723
48 729
49 745
50 804
51 810
52 831
53 834
54 835

List of values

[1, 21, 27, 34, 54, 63, 81, 171, 205, 212, 214, 237, 243, 272, 291, 315, 324, 333, 342, 351, 356, 358, 394, 402, 405, 424, 432, 441, 459, 493, 502, 504, 513, 538, 540, 544, 565, 585, 624, 630, 663, 702, 712, 714, 716, 718, 723, 729, 745, 804, 810, 831, 834, 835]

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

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