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A336743 as a simple table

n a(n)
0 1
1 3
2 15
3 90
4 810
5 8100
6 97200
7 1458000
8 24786000
9 446148000
10 8922960000
11 205228080000
12 4925473920000
13 132987795840000
14 3856646079360000
15 115699382380800000
16 3818079618566400000
17 129814707031257600000
18 4673329453125273600000
19 182259848671885670400000

[1,3,15,90,810,8100,97200,1458000,24786000,
 446148000,8922960000,205228080000,4925473920000,
 132987795840000,3856646079360000,
 115699382380800000,3818079618566400000,
 129814707031257600000,4673329453125273600000,
 182259848671885670400000]

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Last modified July 29 15:02 EDT 2024. Contains 374734 sequences. (Running on oeis4.)