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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.

A056935 Antichains (or order ideals) in the poset 2*3*3*n or size of the distributive lattice J(2*3*3*n).

Table of values

n a(n)
0 1
1 175
2 8790
3 211250
4 3092808
5 31635580
6 246441430
7 1549486490
8 8192995479
9 37548347569
10 152602439244
11 559835910940
12 1880152558980
13 5846268790220
14 16988036626948
15 46486024648180
16 120562654732065
17 297976456047575

List of values

[1, 175, 8790, 211250, 3092808, 31635580, 246441430, 1549486490, 8192995479, 37548347569, 152602439244, 559835910940, 1880152558980, 5846268790220, 16988036626948, 46486024648180, 120562654732065, 297976456047575]

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

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