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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.

A072202 Same numbers of prime factors of forms 4*k+1 and 4*k+3, counted with multiplicity.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 15
6 16
7 30
8 32
9 35
10 39
11 51
12 55
13 60
14 64
15 70
16 78
17 87
18 91
19 95
20 102
21 110
22 111
23 115
24 119
25 120
26 123
27 128
28 140
29 143
30 155
31 156
32 159
33 174
34 182
35 183
36 187
37 190
38 203
39 204
40 215
41 219
42 220
43 222
44 225
45 230
46 235
47 238
48 240
49 246
50 247
51 256
52 259
53 267
54 280
55 286
56 287
57 291

List of values

[1, 2, 4, 8, 15, 16, 30, 32, 35, 39, 51, 55, 60, 64, 70, 78, 87, 91, 95, 102, 110, 111, 115, 119, 120, 123, 128, 140, 143, 155, 156, 159, 174, 182, 183, 187, 190, 203, 204, 215, 219, 220, 222, 225, 230, 235, 238, 240, 246, 247, 256, 259, 267, 280, 286, 287, 291]

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

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