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A204424 as a simple table

n a(n)
1 0
2 2
3 9
4 16
5 144
6 1032
7 5184
8 48816
9 530712
10 4188672
11 50015232
12 707802624
13 7614259200
14 112586112000
15 1938416832000
16 26579819520000
17 469224244224000
18 9509523337728000
19 158654296829952000
20 3261008730405888000

[0,2,9,16,144,1032,5184,48816,530712,4188672,
 50015232,707802624,7614259200,112586112000,
 1938416832000,26579819520000,469224244224000,
 9509523337728000,158654296829952000,
 3261008730405888000]

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)