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.

A032070 Number of reversible strings with n labeled beads of 3 colors, no palindromes of more than 1 bead.

Table of values

n a(n)
1 3
2 6
3 54
4 864
5 12960
6 252720
7 5307120
8 130636800
9 3527193600
10 106697606400
11 3521021011200
12 127105948569600
13 4957131994214400
14 208390202679859200
15 9377559120593664000
16 450260112212951040000

List of values

[3, 6, 54, 864, 12960, 252720, 5307120, 130636800, 3527193600, 106697606400, 3521021011200, 127105948569600, 4957131994214400, 208390202679859200, 9377559120593664000, 450260112212951040000]

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

Content is available under The OEIS End-User License Agreement.