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.

A287256 Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks are <= six.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 15
5 52
6 203
7 877
8 4139
9 21079
10 114784
11 664100
12 4062241
13 26164323
14 176828713
15 1250185783
16 9221588229
17 70796614497
18 564525137134
19 4666694339977
20 39927027760582
21 353023213637306
22 3221255985418911
23 30296436876469140
24 293363448567612910

List of values

[1, 1, 2, 5, 15, 52, 203, 877, 4139, 21079, 114784, 664100, 4062241, 26164323, 176828713, 1250185783, 9221588229, 70796614497, 564525137134, 4666694339977, 39927027760582, 353023213637306, 3221255985418911, 30296436876469140, 293363448567612910]

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

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