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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.

A320091 Number of primitive (=aperiodic) 7-ary words with length less than or equal to n which are earlier in lexicographic order than any other word derived by cyclic shifts of the alphabet.

Table of values

n a(n)
1 1
2 7
3 55
4 391
5 2791
6 19543
7 137191
8 960391
9 6725143
10 47076343
11 329551591
12 2306861191
13 16148148391
14 113037041143
15 791260111543
16 5538820797943
17 38771751367543
18 271402259573191
19 1899815857483639
20 13298711002502839
21 93090977299997143
22 651636841100805895

List of values

[1, 7, 55, 391, 2791, 19543, 137191, 960391, 6725143, 47076343, 329551591, 2306861191, 16148148391, 113037041143, 791260111543, 5538820797943, 38771751367543, 271402259573191, 1899815857483639, 13298711002502839, 93090977299997143, 651636841100805895]

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

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