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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.

A252487 Smallest k such that n^7 = a_1^7 + ... + a_k^7 and all a_i are positive integers less than n.

Table of values

n a(n)
2 128
3 28
4 66
5 39
6 28
7 26
8 21
9 20
10 18
11 22
12 22
13 22
14 20
15 21
16 14
17 17
18 14
19 14
20 17
21 16
22 17
23 14
24 16
25 13
26 15
27 13
28 12
29 15
30 13
31 15
32 13
33 14
34 13
35 14
36 13
37 13
38 14
39 12
40 12
41 12
42 13
43 12
44 12
45 12
46 11
47 13
48 13
49 12
50 12
51 13
52 12
53 12
54 11
55 12
56 11
57 11
58 12
59 12
60 11
61 12
62 9
63 12
64 11
65 11
66 11

List of values

[128, 28, 66, 39, 28, 26, 21, 20, 18, 22, 22, 22, 20, 21, 14, 17, 14, 14, 17, 16, 17, 14, 16, 13, 15, 13, 12, 15, 13, 15, 13, 14, 13, 14, 13, 13, 14, 12, 12, 12, 13, 12, 12, 12, 11, 13, 13, 12, 12, 13, 12, 12, 11, 12, 11, 11, 12, 12, 11, 12, 9, 12, 11, 11, 11]

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

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