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.

A123544 Number of connected labeled 2-regular relations of order n.

Table of values

n a(n)
0 0
1 0
2 1
3 6
4 87
5 1980
6 66270
7 3050460
8 184716630
9 14231775600
10 1359481407480
11 157694893448400
12 21835679256606600
13 3557942554594428000
14 673941365091485290800
15 146851484638349504613600

List of values

[0, 0, 1, 6, 87, 1980, 66270, 3050460, 184716630, 14231775600, 1359481407480, 157694893448400, 21835679256606600, 3557942554594428000, 673941365091485290800, 146851484638349504613600]

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

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