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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.

A274313 The number of conjugacy classes of n X n matrices over GF(2) which are squares of other such matrices.

Table of values

n a(n)
0 1
1 2
2 4
3 10
4 22
5 46
6 96
7 198
8 406
9 826
10 1668
11 3362
12 6770
13 13590
14 27248
15 54614
16 109378
17 218946
18 438180
19 876738
20 1753998
21 3508726
22 7018368
23 14038006
24 28077846
25 56157954
26 112318900
27 224642090
28 449289666
29 898586438
30 1797182704
31 3594378014
32 7188772666
33 14377567834
34 28755164100
35 57510365698
36 115020782350
37 230041628622
38 460083340304
39 920166792942

List of values

[1, 2, 4, 10, 22, 46, 96, 198, 406, 826, 1668, 3362, 6770, 13590, 27248, 54614, 109378, 218946, 438180, 876738, 1753998, 3508726, 7018368, 14038006, 28077846, 56157954, 112318900, 224642090, 449289666, 898586438, 1797182704, 3594378014, 7188772666, 14377567834, 28755164100, 57510365698, 115020782350, 230041628622, 460083340304, 920166792942]

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

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