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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.

A272495 Number of ordered set partitions of [n] with nondecreasing block sizes and maximal block size equal to five.

Table of values

n a(n)
5 1
6 6
7 63
8 560
9 5922
10 61992
11 739662
12 9086616
13 122792670
14 1741884144
15 26631631026
16 428931318816
17 7362963616008
18 132977285400960
19 2538822785931432
20 50863863365419104
21 1070731366348427784
22 23576426902769412672
23 542918591829347774040
24 13035693339696004705728

List of values

[1, 6, 63, 560, 5922, 61992, 739662, 9086616, 122792670, 1741884144, 26631631026, 428931318816, 7362963616008, 132977285400960, 2538822785931432, 50863863365419104, 1070731366348427784, 23576426902769412672, 542918591829347774040, 13035693339696004705728]

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

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