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.

A248388 Indices of composite terms in A247665.

Table of values

n a(n)
1 3
2 6
3 7
4 13
5 15
6 27
7 28
8 31
9 32
10 40
11 50
12 55
13 57
14 63
15 65
16 82
17 101
18 111
19 112
20 115
21 116
22 127
23 131
24 132
25 165
26 172
27 203
28 204
29 223
30 225
31 231
32 233
33 255
34 263
35 264
36 278
37 331
38 332
39 358
40 407
41 408
42 417
43 447
44 448
45 451
46 455
47 463
48 467
49 511
50 527
51 557
52 661
53 663
54 665
55 717
56 761

List of values

[3, 6, 7, 13, 15, 27, 28, 31, 32, 40, 50, 55, 57, 63, 65, 82, 101, 111, 112, 115, 116, 127, 131, 132, 165, 172, 203, 204, 223, 225, 231, 233, 255, 263, 264, 278, 331, 332, 358, 407, 408, 417, 447, 448, 451, 455, 463, 467, 511, 527, 557, 661, 663, 665, 717, 761]