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.

A287257 Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks are <= seven.

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 21146
10 115843
11 675473
12 4168497
13 27104931
14 185021744
15 1321754226
16 9855001715
17 76507188271
18 617104691644
19 5161680552010
20 44693782407111
21 399989835781046
22 3694733749868820
23 35179653387299934
24 344876641013083336

List of values

[1, 1, 2, 5, 15, 52, 203, 877, 4140, 21146, 115843, 675473, 4168497, 27104931, 185021744, 1321754226, 9855001715, 76507188271, 617104691644, 5161680552010, 44693782407111, 399989835781046, 3694733749868820, 35179653387299934, 344876641013083336]

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

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