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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.

A208357 Number of meanders of order 2n+1 (4*n+2 crossings of the infinite line) with central 1-1 cut.

Table of values

n a(n)
1 4
2 64
3 1764
4 68644
5 3341584
6 190992400
7 12310790116
8 871343837764
9 66469126179600
10 5391179227622500
11 460213149486493456
12 41024422751464102500
13 3795407861954983718544
14 362631040029370613957184
15 35638591665642822414493156
16 3590789985613539065908070116
17 369893506453438150061450367376

List of values

[4, 64, 1764, 68644, 3341584, 190992400, 12310790116, 871343837764, 66469126179600, 5391179227622500, 460213149486493456, 41024422751464102500, 3795407861954983718544, 362631040029370613957184, 35638591665642822414493156, 3590789985613539065908070116, 369893506453438150061450367376]

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

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