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.

A204452 A014330 - A203577. Difference between the exponential convolution of A000108 (Catalan) with itself and the corresponding exponential half-convolution.

Table of values

n a(n)
0 0
1 1
2 2
3 11
4 34
5 212
6 804
7 5567
8 24014
9 178148
10 839596
11 6501420
12 32658872
13 259775440
14 1368965576
15 11080668871
16 60613092662
17 496461841956
18 2798385807012
19 23113333523180
20 133539494791000
21 1109722749130576
22 6545965568001272

List of values

[0, 1, 2, 11, 34, 212, 804, 5567, 24014, 178148, 839596, 6501420, 32658872, 259775440, 1368965576, 11080668871, 60613092662, 496461841956, 2798385807012, 23113333523180, 133539494791000, 1109722749130576, 6545965568001272]