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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.

A190267 Numbers n such that d(n-1) = d(n+1) = 6, where d(k) is the number of divisors of k (A000005).

Table of values

n a(n)
1 19
2 51
3 243
4 244
5 424
6 476
7 604
8 638
9 723
10 846
11 926
12 1683
13 1774
14 2008
15 2524
16 2526
17 2528
18 3124
19 3176
20 3178
21 4204
22 4476
23 4526
24 4924
25 5824
26 6726
27 6812
28 6963
29 7300
30 7443
31 7676
32 8426
33 8958
34 8974
35 9458
36 9926
37 10052
38 10083
39 10468
40 11674
41 11710
42 12428
43 12483
44 12592

List of values

[19, 51, 243, 244, 424, 476, 604, 638, 723, 846, 926, 1683, 1774, 2008, 2524, 2526, 2528, 3124, 3176, 3178, 4204, 4476, 4526, 4924, 5824, 6726, 6812, 6963, 7300, 7443, 7676, 8426, 8958, 8974, 9458, 9926, 10052, 10083, 10468, 11674, 11710, 12428, 12483, 12592]

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

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