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.

A270960 Number of set partitions of [n] having exactly six pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.

Table of values

n a(n)
10 1
11 76
12 1650
13 23031
14 264716
15 2788215
16 28315287
17 284453798
18 2865664275
19 29172005637
20 301410662549
21 3169264274716
22 33967946651067
23 371460612845541
24 4146934516914449
25 47274580420037008
26 550357684288267873
27 6542615612312034842
28 79410538735157560508

List of values

[1, 76, 1650, 23031, 264716, 2788215, 28315287, 284453798, 2865664275, 29172005637, 301410662549, 3169264274716, 33967946651067, 371460612845541, 4146934516914449, 47274580420037008, 550357684288267873, 6542615612312034842, 79410538735157560508]

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

Content is available under The OEIS End-User License Agreement.