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.

A042981 Number of degree-n irreducible polynomials over GF(2) with trace = 1 and subtrace = 0.

Table of values

n a(n)
1 1
2 0
3 1
4 1
5 1
6 3
7 4
8 8
9 15
10 24
11 48
12 85
13 155
14 297
15 541
16 1024
17 1935
18 3626
19 6912
20 13107
21 24940
22 47709
23 91136
24 174760
25 335626
26 645120
27 1242904
28 2396745
29 4627915
30 8948385
31 17317888
32 33554432
33 65076240
34 126320640
35 245428574
36 477218560
37 928638035
38 1808414181
39 3524068955
40 6871947672
41 13408691175
42 26178823218

List of values

[1, 0, 1, 1, 1, 3, 4, 8, 15, 24, 48, 85, 155, 297, 541, 1024, 1935, 3626, 6912, 13107, 24940, 47709, 91136, 174760, 335626, 645120, 1242904, 2396745, 4627915, 8948385, 17317888, 33554432, 65076240, 126320640, 245428574, 477218560, 928638035, 1808414181, 3524068955, 6871947672, 13408691175, 26178823218]

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

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