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A080375 as a simple table

n a(n)
1 1
2 2
3 4
4 12
5 24
6 168
7 840
8 2520
9 27720
10 471240
11 942480
12 12252240
13 24504480
14 465585120
15 2327925600
16 72165693600
17 216497080800
18 6278415343200
19 144403552893600
20 288807105787200
21 12418705548849600
22 509166927502833600
23 18839176317604843200
24 131874234223233902400
25 6989334413831396827200
26 328498717450075650878400

[1,2,4,12,24,168,840,2520,27720,471240,942480,
 12252240,24504480,465585120,2327925600,
 72165693600,216497080800,6278415343200,
 144403552893600,288807105787200,12418705548849600,
 509166927502833600,18839176317604843200,
 131874234223233902400,6989334413831396827200,
 328498717450075650878400]

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Last modified September 27 22:01 EDT 2022. Contains 357063 sequences. (Running on oeis4.)