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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.

A318813 Number of balanced reduced multisystems with n atoms all equal to 1.

Table of values

n a(n)
1 1
2 1
3 2
4 6
5 20
6 90
7 468
8 2910
9 20644
10 165874
11 1484344
12 14653890
13 158136988
14 1852077284
15 23394406084
16 317018563806
17 4587391330992
18 70598570456104
19 1151382852200680
20 19835976878704628
21 359963038816096924
22 6863033015330999110
23 137156667020252478684
24 2867083618970831936826

List of values

[1, 1, 2, 6, 20, 90, 468, 2910, 20644, 165874, 1484344, 14653890, 158136988, 1852077284, 23394406084, 317018563806, 4587391330992, 70598570456104, 1151382852200680, 19835976878704628, 359963038816096924, 6863033015330999110, 137156667020252478684, 2867083618970831936826]

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

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