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A329489 as a simple table

n a(n)
1 1
2 0
3 255
4 624
5 14640
6 65280
7 707280
8 4100000
9 33361920
10 214344240
11 1568239200
12 10485693840
13 73680216480
14 500245705680
15 3461445351120
16 23639283000000
17 162614549665680
18 1113034754027520
19 7639424429247600
20 52333710967281120
21 358890347608872240

[1,0,255,624,14640,65280,707280,4100000,33361920,
 214344240,1568239200,10485693840,73680216480,
 500245705680,3461445351120,23639283000000,
 162614549665680,1113034754027520,7639424429247600,
 52333710967281120,358890347608872240]

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)