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.

A287255 Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks are <= five.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 15
5 52
6 203
7 876
8 4104
9 20666
10 111075
11 633704
12 3819875
13 24230302
14 161175189
15 1120918549
16 8129696204
17 61351621492
18 480802257296
19 3905922860317
20 32839970931663
21 285348575175351
22 2559007785431183
23 23657489230231038
24 225209876301752325

List of values

[1, 1, 2, 5, 15, 52, 203, 876, 4104, 20666, 111075, 633704, 3819875, 24230302, 161175189, 1120918549, 8129696204, 61351621492, 480802257296, 3905922860317, 32839970931663, 285348575175351, 2559007785431183, 23657489230231038, 225209876301752325]

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

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