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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.

A030057 Least number that is not a sum of distinct divisors of n.

Table of values

n a(n)
1 2
2 4
3 2
4 8
5 2
6 13
7 2
8 16
9 2
10 4
11 2
12 29
13 2
14 4
15 2
16 32
17 2
18 40
19 2
20 43
21 2
22 4
23 2
24 61
25 2
26 4
27 2
28 57
29 2
30 73
31 2
32 64
33 2
34 4
35 2
36 92
37 2
38 4
39 2
40 91
41 2
42 97
43 2
44 8
45 2
46 4
47 2
48 125
49 2
50 4
51 2
52 8
53 2
54 121
55 2
56 121
57 2
58 4
59 2
60 169
61 2
62 4
63 2
64 128
65 2
66 145
67 2
68 8
69 2
70 4
71 2
72 196
73 2
74 4
75 2
76 8
77 2
78 169
79 2
80 187
81 2
82 4
83 2
84 225
85 2
86 4
87 2
88 181

List of values

[2, 4, 2, 8, 2, 13, 2, 16, 2, 4, 2, 29, 2, 4, 2, 32, 2, 40, 2, 43, 2, 4, 2, 61, 2, 4, 2, 57, 2, 73, 2, 64, 2, 4, 2, 92, 2, 4, 2, 91, 2, 97, 2, 8, 2, 4, 2, 125, 2, 4, 2, 8, 2, 121, 2, 121, 2, 4, 2, 169, 2, 4, 2, 128, 2, 145, 2, 8, 2, 4, 2, 196, 2, 4, 2, 8, 2, 169, 2, 187, 2, 4, 2, 225, 2, 4, 2, 181]

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

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