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A002298 as a simple table

n a(n)
1 1
2 1
3 4
4 3
5 192
6 20
7 11520
8 315
9 573440
10 36288
11 928972800
12 1663200
13 54499737600
14 74131200
15 1322526965760
16 6810804000
17 228532659683328000
18 37638881280
19 16783438527143608320
20 121645100408832
21 30370031620545576960000

[1,1,4,3,192,20,11520,315,573440,36288,928972800,
 1663200,54499737600,74131200,1322526965760,
 6810804000,228532659683328000,37638881280,
 16783438527143608320,121645100408832,
 30370031620545576960000]

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Last modified April 23 06:04 EDT 2024. Contains 371906 sequences. (Running on oeis4.)