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.

A275291 Number of set partitions of [n] with symmetric block size list of length seven.

Table of values

n a(n)
7 1
8 4
9 50
10 250
11 2160
12 12256
13 91925
14 559987
15 3939653
16 24964844
17 170468820
18 1104449861
19 7440709045
20 48835462696
21 327230257098
22 2164985118201
23 14485751773693
24 96353703793654
25 644984901718337
26 4306885857654070
27 28868100135841407
28 193352040530826181

List of values

[1, 4, 50, 250, 2160, 12256, 91925, 559987, 3939653, 24964844, 170468820, 1104449861, 7440709045, 48835462696, 327230257098, 2164985118201, 14485751773693, 96353703793654, 644984901718337, 4306885857654070, 28868100135841407, 193352040530826181]

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

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