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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.

A173517 a(n) = k if n is the k-th nonsquare, zero otherwise.

Table of values

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

List of values

[0, 0, 1, 2, 0, 3, 4, 5, 6, 0, 7, 8, 9, 10, 11, 12, 0, 13, 14, 15, 16, 17, 18, 19, 20, 0, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 0, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 0, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 0, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67]

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

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