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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.

A102548 Number of positive integers <= n that are expressible in the form u^2+v^2, with u and v integers.

Table of values

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

List of values

[1, 2, 2, 3, 4, 4, 4, 5, 6, 7, 7, 7, 8, 8, 8, 9, 10, 11, 11, 12, 12, 12, 12, 12, 13, 14, 14, 14, 15, 15, 15, 16, 16, 17, 17, 18, 19, 19, 19, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 24, 24, 25, 26, 26, 26, 26, 26, 27, 27, 27, 28, 28, 28, 29, 30, 30, 30, 31, 31, 31, 31, 32, 33, 34, 34]

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

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