cp's OEIS Frontend

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.

A287259 Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks are <= nine.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 15
5 52
6 203
7 877
8 4140
9 21147
10 115975
11 678569
12 4213081
13 27621156
14 190402182
15 1375129039
16 10374133545
17 81541494757
18 666269176903
19 5648127595636
20 49587725282894
21 450158439775999
22 4219372853286578
23 40779812327165914
24 405907919759151220

List of values

[1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115975, 678569, 4213081, 27621156, 190402182, 1375129039, 10374133545, 81541494757, 666269176903, 5648127595636, 49587725282894, 450158439775999, 4219372853286578, 40779812327165914, 405907919759151220]

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

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