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.

A120018 The third self-composition of A120010; g.f.: A(x) = G(G(G(x))), where G(x) = g.f. of A120010.

Table of values

n a(n)
1 1
2 3
3 9
4 30
5 114
6 480
7 2157
8 10092
9 48525
10 238143
11 1187952
12 6006171
13 30710553
14 158535975
15 825143145
16 4325320191
17 22814398392
18 120999555588
19 644878190175
20 3451975941243
21 18550877091063
22 100047282676491
23 541314936448764

List of values

[1, 3, 9, 30, 114, 480, 2157, 10092, 48525, 238143, 1187952, 6006171, 30710553, 158535975, 825143145, 4325320191, 22814398392, 120999555588, 644878190175, 3451975941243, 18550877091063, 100047282676491, 541314936448764]

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

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