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A006326 as a simple table

n a(n)
3 1
4 5
5 24
6 122
7 680
8 4155
9 27776
10 202084
11 1592064
12 13513825
13 123025408
14 1196165886
15 12374422528
16 135740585015
17 1573990072320
18 19239037403528
19 247255523459072
20 3333340694137725
21 47039231504678912
22 693488743931379010
23 10661950808321949696
24 170659875799127955955

[1,5,24,122,680,4155,27776,202084,1592064,
 13513825,123025408,1196165886,12374422528,
 135740585015,1573990072320,19239037403528,
 247255523459072,3333340694137725,
 47039231504678912,693488743931379010,
 10661950808321949696,170659875799127955955]

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Last modified May 29 14:37 EDT 2024. Contains 372952 sequences. (Running on oeis4.)