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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.

A230497 a(n), n>=2, is the minimal odd evil k, such that k^i, i=2,3,...,n, all are odious, and a(n)=0, if there is no such k.

Table of values

n a(n)
2 5
3 23
4 71
5 85
6 89
7 163
8 225
9 225
10 225
11 225
12 6075
13 6075
14 9859
15 9859
16 9859
17 9859
18 9859
19 9859
20 5031037
21 10430265
22 11896187
23 11896187
24 11896187
25 22402429
26 340713205
27 570919625
28 570919625
29 570919625
30 1496195709
31 1496195709
32 1496195709
33 5743845611
34 8271306199
35 8271306199
36 8271306199

List of values

[5, 23, 71, 85, 89, 163, 225, 225, 225, 225, 6075, 6075, 9859, 9859, 9859, 9859, 9859, 9859, 5031037, 10430265, 11896187, 11896187, 11896187, 22402429, 340713205, 570919625, 570919625, 570919625, 1496195709, 1496195709, 1496195709, 5743845611, 8271306199, 8271306199, 8271306199]