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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.

A074450 Let x = RootOf(z^2 + z + 1) and y = 1+x. Number of 4-ary Lyndon words of length n over GF(4) with trace 1 and subtrace x.

Table of values

n a(n)
1 0
2 0
3 1
4 4
5 12
6 40
7 144
8 512
9 1813
10 6528
11 23808
12 87380
13 322560
14 1198080
15 4473647
16 16777216
17 63160320
18 238605640
19 904200192
20 3435973836
21 13089411609
22 49977753600
23 191219367936
24 733007751680
25 2814749599332
26 10825959997440
27 41699995927744
28 160842843834660
29 621186153185280

List of values

[0, 0, 1, 4, 12, 40, 144, 512, 1813, 6528, 23808, 87380, 322560, 1198080, 4473647, 16777216, 63160320, 238605640, 904200192, 3435973836, 13089411609, 49977753600, 191219367936, 733007751680, 2814749599332, 10825959997440, 41699995927744, 160842843834660, 621186153185280]

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

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