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.

A174075 Number of circular permutations of length n without modular consecutive triples i,i+2,i+4.

Table of values

n a(n)
3 1
4 6
5 18
6 93
7 600
8 4320
9 35168
10 321630
11 3257109
12 36199458
13 438126986
14 5736774869
15 80808984725
16 1218563192160
17 19587031966352
18 334329804180135
19 6039535339644630
20 115118210695441900
21 2308967760171049528
22 48613722701440862328
23 1072008447320752890459

List of values

[1, 6, 18, 93, 600, 4320, 35168, 321630, 3257109, 36199458, 438126986, 5736774869, 80808984725, 1218563192160, 19587031966352, 334329804180135, 6039535339644630, 115118210695441900, 2308967760171049528, 48613722701440862328, 1072008447320752890459]

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

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