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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.

A122977 Number of sublattices of the divisor lattice of divisors of n that include n.

Table of values

n a(n)
1 1
2 2
3 2
4 4
5 2
6 7
7 2
8 8
9 4
10 7
11 2
12 21
13 2
14 7
15 7
16 16
17 2
18 21
19 2
20 21
21 7
22 7
23 2
24 58
25 4
26 7
27 8
28 21
29 2
30 45
31 2
32 32
33 7
34 7
35 7
36 84
37 2
38 7
39 7
40 58
41 2
42 45
43 2
44 21
45 21
46 7
47 2
48 152
49 4
50 21
51 7
52 21
53 2
54 58
55 7
56 58
57 7
58 7
59 2
60 200
61 2
62 7
63 21
64 64
65 7
66 45
67 2
68 21
69 7
70 45
71 2
72 293
73 2
74 7
75 21
76 21
77 7
78 45
79 2
80 152
81 16
82 7
83 2
84 200
85 7
86 7

List of values

[1, 2, 2, 4, 2, 7, 2, 8, 4, 7, 2, 21, 2, 7, 7, 16, 2, 21, 2, 21, 7, 7, 2, 58, 4, 7, 8, 21, 2, 45, 2, 32, 7, 7, 7, 84, 2, 7, 7, 58, 2, 45, 2, 21, 21, 7, 2, 152, 4, 21, 7, 21, 2, 58, 7, 58, 7, 7, 2, 200, 2, 7, 21, 64, 7, 45, 2, 21, 7, 45, 2, 293, 2, 7, 21, 21, 7, 45, 2, 152, 16, 7, 2, 200, 7, 7]

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

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