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.

A168357 Self-convolution of A006664, which is the number of irreducible systems of meanders.

Table of values

n a(n)
0 1
1 2
2 5
3 20
4 112
5 768
6 5984
7 50856
8 460180
9 4366076
10 42988488
11 436066232
12 4532973676
13 48095557700
14 519247705968
15 5690272928520
16 63172884082028
17 709373555125356
18 8046263496489260
19 92089662771965492
20 1062482514810065752

List of values

[1, 2, 5, 20, 112, 768, 5984, 50856, 460180, 4366076, 42988488, 436066232, 4532973676, 48095557700, 519247705968, 5690272928520, 63172884082028, 709373555125356, 8046263496489260, 92089662771965492, 1062482514810065752]

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

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