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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.

A034940 Number of rooted labeled triangular cacti with 2n+1 nodes (n triangles).

Table of values

n a(n)
0 1
1 3
2 75
3 5145
4 688905
5 152193195
6 50174679555
7 23089081640625
8 14140034726843025
9 11119632520038117075
10 10920803043967635894075
11 13100477280449146440878025
12 18849023772776126861572265625
13 32038907667175368299033846026875
14 63516199119599233704934379969701875

List of values

[1, 3, 75, 5145, 688905, 152193195, 50174679555, 23089081640625, 14140034726843025, 11119632520038117075, 10920803043967635894075, 13100477280449146440878025, 18849023772776126861572265625, 32038907667175368299033846026875, 63516199119599233704934379969701875]

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

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