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A375526 as a simple table

n a(n)
1 2
2 6
3 30
4 210
5 420
6 420
7 1260
8 126
9 3150
10 97650
11 830025
12 6640200
13 6640200
14 312089400
15 312089400
16 9050592600
17 72404740800
18 4851117633600
19 354131587252800
20 4603710634286400
21 4603710634286400
22 197959557274315200
23 15227658251870400
24 1477082850431428800
25 78285391072865726400

[2,6,30,210,420,420,1260,126,3150,97650,830025,
 6640200,6640200,312089400,312089400,9050592600,
 72404740800,4851117633600,354131587252800,
 4603710634286400,4603710634286400,
 197959557274315200,15227658251870400,
 1477082850431428800,78285391072865726400]

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Last modified September 13 00:40 EDT 2024. Contains 375857 sequences. (Running on oeis4.)