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.

A324276 Bi-unitary untouchable numbers: numbers that are not the sum of aliquot bi-unitary divisors of any number.

Table of values

n a(n)
1 2
2 3
3 4
4 5
5 38
6 68
7 80
8 96
9 98
10 128
11 138
12 146
13 158
14 164
15 180
16 188
17 192
18 206
19 208
20 210
21 212
22 222
23 224
24 248
25 264
26 278
27 290
28 300
29 304
30 308
31 324
32 326
33 328
34 338
35 360
36 374
37 380
38 390
39 398
40 416
41 418
42 420
43 430
44 432
45 458
46 476
47 480
48 488
49 498
50 516
51 518
52 530
53 536
54 542
55 548

List of values

[2, 3, 4, 5, 38, 68, 80, 96, 98, 128, 138, 146, 158, 164, 180, 188, 192, 206, 208, 210, 212, 222, 224, 248, 264, 278, 290, 300, 304, 308, 324, 326, 328, 338, 360, 374, 380, 390, 398, 416, 418, 420, 430, 432, 458, 476, 480, 488, 498, 516, 518, 530, 536, 542, 548]

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

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