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.

A174076 Number of permutations of length n with no consecutive triples i,i+2,i+4 or i,i-2,i-4.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 24
5 108
6 632
7 4408
8 35336
9 319056
10 3205824
11 35451984
12 427683560
13 5588310904
14 78615281768
15 1184587864512
16 19033796498496
17 324852522308160
18 5868833343451592
19 111889157407344424

List of values

[1, 1, 2, 6, 24, 108, 632, 4408, 35336, 319056, 3205824, 35451984, 427683560, 5588310904, 78615281768, 1184587864512, 19033796498496, 324852522308160, 5868833343451592, 111889157407344424]

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

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