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.

A300323 Number of Dyck paths of semilength n such that the area under the right half of the path equals the area under the left half of the path.

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 6
5 12
6 28
7 69
8 186
9 522
10 1536
11 4638
12 14408
13 45568
14 146884
15 479871
16 1589516
17 5320854
18 18000198
19 61412376
20 211282386
21 731973720
22 2553168136
23 8957554412
24 31604599044
25 112060048354
26 399227283950
27 1428315878002
28 5130964125124
29 18499652813682

List of values

[1, 1, 2, 3, 6, 12, 28, 69, 186, 522, 1536, 4638, 14408, 45568, 146884, 479871, 1589516, 5320854, 18000198, 61412376, 211282386, 731973720, 2553168136, 8957554412, 31604599044, 112060048354, 399227283950, 1428315878002, 5130964125124, 18499652813682]