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.

A280884 Number of set partitions of [n] into exactly six blocks where sizes of distinct blocks are coprime.

Table of values

n a(n)
6 1
7 21
8 56
9 1386
10 252
11 18942
12 28512
13 837837
14 122122
15 17600583
16 1445808
17 140411908
18 301302288
19 10781435088
20 79318464
21 333208994139
22 6813685494
23 597189699029
24 582524800704
25 89346032143830
26 3151550453480
27 1467268659100530
28 1095411461933880
29 45383787697612455

List of values

[1, 21, 56, 1386, 252, 18942, 28512, 837837, 122122, 17600583, 1445808, 140411908, 301302288, 10781435088, 79318464, 333208994139, 6813685494, 597189699029, 582524800704, 89346032143830, 3151550453480, 1467268659100530, 1095411461933880, 45383787697612455]

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

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