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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.

A193477 Denominator(n!/floor(n/2)!^4).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 2
6 9
7 9
8 288
9 32
10 400
11 400
12 43200
13 43200
14 1058400
15 70560
16 18063360
17 18063360
18 6584094720
19 6584094720
20 3292047360000
21 156764160000
22 9484231680000
23 9484231680000
24 8194376171520000
25 327775046860800
26 27696991459737600
27 1025814498508800

List of values

[1, 1, 1, 1, 2, 2, 9, 9, 288, 32, 400, 400, 43200, 43200, 1058400, 70560, 18063360, 18063360, 6584094720, 6584094720, 3292047360000, 156764160000, 9484231680000, 9484231680000, 8194376171520000, 327775046860800, 27696991459737600, 1025814498508800]

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

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