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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.

A046209 Number of ternary Lyndon words whose digits sum to 0 mod 3; also number of trace 0 irreducible polynomials over GF(3).

Table of values

n a(n)
1 1
2 1
3 2
4 6
5 16
6 38
7 104
8 270
9 726
10 1960
11 5368
12 14736
13 40880
14 113828
15 318848
16 896670
17 2532160
18 7174050
19 20390552
20 58112088
21 166037248
22 475467916
23 1364393896
24 3922624800
25 11297181456
26 32588003000
27 94143178098
28 272342710380
29 788854912240
30 2287679084096
31 6641649422408
32 19302293185470

List of values

[1, 1, 2, 6, 16, 38, 104, 270, 726, 1960, 5368, 14736, 40880, 113828, 318848, 896670, 2532160, 7174050, 20390552, 58112088, 166037248, 475467916, 1364393896, 3922624800, 11297181456, 32588003000, 94143178098, 272342710380, 788854912240, 2287679084096, 6641649422408, 19302293185470]

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

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