cp's OEIS Frontend

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.

A020893 Squarefree sums of two squares; or squarefree numbers with no prime factors of the form 4k+3.

Table of values

n a(n)
1 1
2 2
3 5
4 10
5 13
6 17
7 26
8 29
9 34
10 37
11 41
12 53
13 58
14 61
15 65
16 73
17 74
18 82
19 85
20 89
21 97
22 101
23 106
24 109
25 113
26 122
27 130
28 137
29 145
30 146
31 149
32 157
33 170
34 173
35 178
36 181
37 185
38 193
39 194
40 197
41 202
42 205
43 218
44 221
45 226
46 229
47 233
48 241
49 257
50 265
51 269
52 274
53 277
54 281
55 290
56 293
57 298
58 305
59 313
60 314
61 317
62 337
63 346
64 349

List of values

[1, 2, 5, 10, 13, 17, 26, 29, 34, 37, 41, 53, 58, 61, 65, 73, 74, 82, 85, 89, 97, 101, 106, 109, 113, 122, 130, 137, 145, 146, 149, 157, 170, 173, 178, 181, 185, 193, 194, 197, 202, 205, 218, 221, 226, 229, 233, 241, 257, 265, 269, 274, 277, 281, 290, 293, 298, 305, 313, 314, 317, 337, 346, 349]