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A030055 as a simple table

n a(n)
5 1
6 13
7 105
8 680
9 3876
10 20349
11 100947
12 480700
13 2220075
14 10015005
15 44352165
16 193536720
17 834451800
18 3562467300
19 15084504396
20 63432274896
21 265182149218
22 1103068603890
23 4568648125690
24 18851684897584

[1,13,105,680,3876,20349,100947,480700,2220075,
 10015005,44352165,193536720,834451800,3562467300,
 15084504396,63432274896,265182149218,
 1103068603890,4568648125690,18851684897584]

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Last modified April 19 04:04 EDT 2024. Contains 371782 sequences. (Running on oeis4.)