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.

A245860 Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 7.

Table of values

n a(n)
7 1
8 0
9 0
10 0
11 0
12 0
13 0
14 3432
15 12870
16 22880
17 38896
18 63648
19 100776
20 155040
21 399305520
22 3292693008
23 17879790324
24 70676513424
25 242216077400
26 762341522800
27 2264840592300
28 478970960616720
29 6869326015894680
30 61426122596911800
31 435982960069722000
32 2589856033041531072

List of values

[1, 0, 0, 0, 0, 0, 0, 3432, 12870, 22880, 38896, 63648, 100776, 155040, 399305520, 3292693008, 17879790324, 70676513424, 242216077400, 762341522800, 2264840592300, 478970960616720, 6869326015894680, 61426122596911800, 435982960069722000, 2589856033041531072]

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

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