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.

A280887 Number of set partitions of [n] into exactly nine blocks where sizes of distinct blocks are coprime.

Table of values

n a(n)
9 1
10 45
11 165
12 8415
13 1287
14 195195
15 366795
16 22046310
17 2358070
18 693870606
19 39982878
20 7765924530
21 19829897010
22 1474459789770
23 4013220090
24 63387586762335
25 769009559175
26 106739428871075
27 85029993637875
28 28720696235896665
29 574973722599705
30 581923529546044725

List of values

[1, 45, 165, 8415, 1287, 195195, 366795, 22046310, 2358070, 693870606, 39982878, 7765924530, 19829897010, 1474459789770, 4013220090, 63387586762335, 769009559175, 106739428871075, 85029993637875, 28720696235896665, 574973722599705, 581923529546044725]

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

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