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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.

A321909 a(n) is the least base b > 1 in which the additive persistence of n is <= 1.

Table of values

n a(n)
0 2
1 2
2 2
3 3
4 2
5 4
6 3
7 5
8 2
9 3
10 3
11 5
12 3
13 6
14 6
15 5
16 2
17 4
18 3
19 6
20 4
21 4
22 7
23 7
24 4
25 5
26 5
27 3
28 3
29 7
30 3
31 5
32 2
33 4
34 8
35 5
36 3
37 6
38 6
39 6
40 5
41 8
42 6
43 6
44 6
45 6
46 9
47 9
48 4
49 6
50 5
51 5
52 5
53 7
54 3
55 5
56 5
57 7
58 7
59 7
60 5
61 10
62 10
63 7
64 2
65 4
66 4
67 8
68 4
69 4
70 7
71 7
72 4
73 6
74 6
75 5
76 5
77 7
78 6
79 6
80 4
81 3
82 3
83 8
84 3
85 6

List of values

[2, 2, 2, 3, 2, 4, 3, 5, 2, 3, 3, 5, 3, 6, 6, 5, 2, 4, 3, 6, 4, 4, 7, 7, 4, 5, 5, 3, 3, 7, 3, 5, 2, 4, 8, 5, 3, 6, 6, 6, 5, 8, 6, 6, 6, 6, 9, 9, 4, 6, 5, 5, 5, 7, 3, 5, 5, 7, 7, 7, 5, 10, 10, 7, 2, 4, 4, 8, 4, 4, 7, 7, 4, 6, 6, 5, 5, 7, 6, 6, 4, 3, 3, 8, 3, 6]

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