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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.

A263118 Indices of the primitive friendly pairs in the sequence of friendly pairs (A050973, A050972) ordered by smallest maximal element.

Table of values

n a(n)
1 1
2 3
3 4
4 5
5 6
6 10
7 11
8 18
9 20
10 29
11 33
12 70
13 115
14 116
15 133
16 136
17 155
18 156
19 157
20 212
21 255
22 360
23 414
24 468
25 470
26 477
27 518
28 519
29 578
30 771
31 787
32 830
33 971
34 1039
35 1046
36 1121
37 1687
38 1793
39 2983
40 3092
41 3359
42 3360
43 3570
44 4084
45 4190
46 4255
47 5281
48 7032
49 7141
50 7167
51 8248
52 8385
53 8386
54 8630
55 8890

List of values

[1, 3, 4, 5, 6, 10, 11, 18, 20, 29, 33, 70, 115, 116, 133, 136, 155, 156, 157, 212, 255, 360, 414, 468, 470, 477, 518, 519, 578, 771, 787, 830, 971, 1039, 1046, 1121, 1687, 1793, 2983, 3092, 3359, 3360, 3570, 4084, 4190, 4255, 5281, 7032, 7141, 7167, 8248, 8385, 8386, 8630, 8890]

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

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