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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.

A030114 Number of distributive lattices; also number of paths with n turns when light is reflected from 10 glass plates.

Table of values

n a(n)
0 1
1 10
2 55
3 385
4 2530
5 17017
6 113641
7 760804
8 5089282
9 34053437
10 227837533
11 1524414737
12 10199443436
13 68241935348
14 456589252304
15 3054922560820
16 20439707165252
17 136756870048981
18 915005341022187
19 6122067418010887
20 40961191948244094
21 274060890253820561

List of values

[1, 10, 55, 385, 2530, 17017, 113641, 760804, 5089282, 34053437, 227837533, 1524414737, 10199443436, 68241935348, 456589252304, 3054922560820, 20439707165252, 136756870048981, 915005341022187, 6122067418010887, 40961191948244094, 274060890253820561]

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

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