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.

A125107 Subtract compositions (A011782) from Catalan numbers (A000108).

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 6
5 26
6 100
7 365
8 1302
9 4606
10 16284
11 57762
12 205964
13 738804
14 2666248
15 9678461
16 35324902
17 129579254
18 477507628
19 1767001046
20 6563596132
21 24465218444
22 91480466488
23 343055419346
24 1289895758716
25 4861929624236
26 18367319517720
27 69533483807140
28 263747817532632

List of values

[0, 0, 0, 1, 6, 26, 100, 365, 1302, 4606, 16284, 57762, 205964, 738804, 2666248, 9678461, 35324902, 129579254, 477507628, 1767001046, 6563596132, 24465218444, 91480466488, 343055419346, 1289895758716, 4861929624236, 18367319517720, 69533483807140, 263747817532632]