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A046674 as a simple table

n a(n)
1 1
2 18
3 660
4 42000
5 4142880
6 586776960
7 113020427520
8 28432576972800
9 9056055981772800
10 3562946373482496000
11 1697172166720622592000
12 962691052768668647424000
13 641260394342965606809600000
14 495681727573700350908825600000
15 440084864982859007245221888000000

[1,18,660,42000,4142880,586776960,113020427520,
 28432576972800,9056055981772800,
 3562946373482496000,1697172166720622592000,
 962691052768668647424000,
 641260394342965606809600000,
 495681727573700350908825600000,
 440084864982859007245221888000000]

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Last modified June 6 18:59 EDT 2020. Contains 334832 sequences. (Running on oeis4.)