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.

A373257 Numbers k for which A003415(k) == -1 (mod 3), where A003415 is the arithmetic derivative.

Table of values

n a(n)
1 6
2 15
3 16
4 24
5 28
6 32
7 33
8 40
9 42
10 49
11 51
12 52
13 56
14 60
15 69
16 70
17 76
18 78
19 80
20 87
21 88
22 91
23 96
24 98
25 100
26 104
27 105
28 114
29 123
30 124
31 130
32 132
33 133
34 136
35 140
36 141
37 148
38 150
39 152
40 154
41 159
42 168
43 169
44 172
45 175
46 176
47 177
48 182
49 184
50 186
51 190
52 195
53 200
54 204
55 213
56 217
57 220
58 222
59 231
60 232
61 238
62 240
63 244
64 245
65 247
66 248
67 249
68 250
69 258

List of values

[6, 15, 16, 24, 28, 32, 33, 40, 42, 49, 51, 52, 56, 60, 69, 70, 76, 78, 80, 87, 88, 91, 96, 98, 100, 104, 105, 114, 123, 124, 130, 132, 133, 136, 140, 141, 148, 150, 152, 154, 159, 168, 169, 172, 175, 176, 177, 182, 184, 186, 190, 195, 200, 204, 213, 217, 220, 222, 231, 232, 238, 240, 244, 245, 247, 248, 249, 250, 258]

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

Content is available under The OEIS End-User License Agreement.