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A134764 as a simple table

n a(n)
1 1
2 1
3 5
4 18
5 69
6 245
7 923
8 3412
9 12864
10 48549
11 184755
12 705162
13 2704155
14 10399675
15 40116525
16 155114088
17 601080389
18 2333593104
19 9075135299
20 35345215162
21 137846527891
22 538257689683
23 2104098963719
24 8233430018756
25 32247603683030

[1,1,5,18,69,245,923,3412,12864,48549,184755,
 705162,2704155,10399675,40116525,155114088,
 601080389,2333593104,9075135299,35345215162,
 137846527891,538257689683,2104098963719,
 8233430018756,32247603683030]

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Last modified June 18 01:16 EDT 2021. Contains 345098 sequences. (Running on oeis4.)