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.

A074915 Largest x such that the number of nonprimes (i.e., 1 and composites) in the reduced residue set (RRS(x)) of x equals n, or 0 if there are no such numbers.

Table of values

n a(n)
1 30
2 60
3 90
4 84
5 120
6 210
7 50
8 150
9 126
10 180
11 132
12 168
13 0
14 138
15 240
16 144
17 140
18 330
19 420
20 130
21 300
22 92
23 390
24 234
25 294
26 228
27 360
28 222
29 160
30 246
31 0
32 336
33 276
34 630
35 510
36 450
37 378
38 152
39 480
40 280
41 318
42 196
43 342
44 660
45 165
46 396
47 172
48 546
49 250
50 840
51 504
52 408
53 350
54 600

List of values

[30, 60, 90, 84, 120, 210, 50, 150, 126, 180, 132, 168, 0, 138, 240, 144, 140, 330, 420, 130, 300, 92, 390, 234, 294, 228, 360, 222, 160, 246, 0, 336, 276, 630, 510, 450, 378, 152, 480, 280, 318, 196, 342, 660, 165, 396, 172, 546, 250, 840, 504, 408, 350, 600]

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

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