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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.

A300335 Number of ordered set partitions of {1,...,n} with weakly increasing block-sums.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 18
5 65
6 258
7 1156
8 5558
9 29029
10 161942
11 967921
12 6110687
13 40807420
14 286177944
15 2107745450
16 16202590638
17 130043111849
18 1085011337141
19 9408577992091
20 84501248359552
21 786018565954838
22 7550153439748394

List of values

[1, 1, 2, 6, 18, 65, 258, 1156, 5558, 29029, 161942, 967921, 6110687, 40807420, 286177944, 2107745450, 16202590638, 130043111849, 1085011337141, 9408577992091, 84501248359552, 786018565954838, 7550153439748394]

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

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