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.

A051488 Numbers k such that phi(k) < phi(k - phi(k)).

Table of values

n a(n)
1 30
2 60
3 66
4 120
5 132
6 138
7 174
8 210
9 240
10 246
11 264
12 276
13 318
14 330
15 348
16 420
17 480
18 492
19 498
20 510
21 528
22 534
23 552
24 630
25 636
26 660
27 678
28 690
29 696
30 786
31 840
32 870
33 910
34 960
35 984
36 996
37 1020
38 1038
39 1056
40 1068
41 1074
42 1104
43 1122
44 1146
45 1260
46 1272
47 1320
48 1330
49 1356

List of values

[30, 60, 66, 120, 132, 138, 174, 210, 240, 246, 264, 276, 318, 330, 348, 420, 480, 492, 498, 510, 528, 534, 552, 630, 636, 660, 678, 690, 696, 786, 840, 870, 910, 960, 984, 996, 1020, 1038, 1056, 1068, 1074, 1104, 1122, 1146, 1260, 1272, 1320, 1330, 1356]

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

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