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.

A042980 Number of degree-n irreducible polynomials over GF(2) with trace = 0 and subtrace = 0.

Table of values

n a(n)
1 1
2 0
3 0
4 1
5 1
6 2
7 5
8 6
9 15
10 24
11 45
12 85
13 155
14 288
15 550
16 1008
17 1935
18 3626
19 6885
20 13107
21 24940
22 47616
23 91225
24 174590
25 335626
26 645120
27 1242600
28 2396745
29 4627915
30 8947294
31 17318945
32 33552384
33 65076240
34 126320640
35 245424829
36 477218560
37 928638035
38 1808400384
39 3524082400
40 6871921458
41 13408691175
42 26178823218

List of values

[1, 0, 0, 1, 1, 2, 5, 6, 15, 24, 45, 85, 155, 288, 550, 1008, 1935, 3626, 6885, 13107, 24940, 47616, 91225, 174590, 335626, 645120, 1242600, 2396745, 4627915, 8947294, 17318945, 33552384, 65076240, 126320640, 245424829, 477218560, 928638035, 1808400384, 3524082400, 6871921458, 13408691175, 26178823218]

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

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