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.

A245858 Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 5.

Table of values

n a(n)
5 1
6 0
7 0
8 0
9 0
10 252
11 924
12 1584
13 2574
14 4004
15 762762
16 6062784
17 31868200
18 121314312
19 399096216
20 12936646128
21 167685283332
22 1429020461484
23 9754485257594
24 55756633204272
25 905519956068420
26 14816352889289380
27 179362257853420980
28 1745771827872126600

List of values

[1, 0, 0, 0, 0, 252, 924, 1584, 2574, 4004, 762762, 6062784, 31868200, 121314312, 399096216, 12936646128, 167685283332, 1429020461484, 9754485257594, 55756633204272, 905519956068420, 14816352889289380, 179362257853420980, 1745771827872126600]

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

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