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A264910 as a simple table

n a(n)
0 1
1 1
2 5
3 30
4 195
5 1380
6 10555
7 86815
8 764350
9 7174420
10 71532369
11 755136887
12 8415519048
13 98744576456
14 1216948265335
15 15718032335081
16 212330461568282
17 2994374695258034
18 44008250794756373
19 672986694107199687
20 10692604102273015636
21 176266660430175342285

[1,1,5,30,195,1380,10555,86815,764350,7174420,
 71532369,755136887,8415519048,98744576456,
 1216948265335,15718032335081,212330461568282,
 2994374695258034,44008250794756373,
 672986694107199687,10692604102273015636,
 176266660430175342285]

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Last modified July 14 10:07 EDT 2020. Contains 335721 sequences. (Running on oeis4.)