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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.

A161884 Smallest k such that n^4 = a_1^4+...+a_k^4 and all a_i are positive integers less than n.

Table of values

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

List of values

[16, 6, 16, 5, 6, 6, 16, 6, 5, 7, 6, 6, 6, 5, 16, 6, 6, 6, 5, 6, 7, 6, 6, 5, 6, 6, 6, 6, 5, 5, 16, 6, 6, 5, 6, 6, 6, 6, 5, 6, 6, 6, 7, 5, 6, 6, 6, 6, 5, 6, 6, 6, 6, 5, 6, 6, 6, 6, 5, 6, 5, 6, 16, 5, 6, 6, 6, 6, 5, 6, 6, 6, 6, 5, 6, 6, 6, 6, 5, 6, 6, 6, 6, 5, 6]

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