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A225015 as a simple table

n a(n)
0 0
1 1
2 1
3 5
4 18
5 66
6 245
7 918
8 3465
9 13156
10 50193
11 192270
12 739024
13 2848860
14 11009778
15 42642460
16 165480975
17 643281480
18 2504501625
19 9764299710
20 38115568260
21 148955040300
22 582714871830
23 2281745337300
24 8942420595810
25 35074414899576
26 137672461877850
27 540756483094828

[0,1,1,5,18,66,245,918,3465,13156,50193,192270,
 739024,2848860,11009778,42642460,165480975,
 643281480,2504501625,9764299710,38115568260,
 148955040300,582714871830,2281745337300,
 8942420595810,35074414899576,137672461877850,
 540756483094828]

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)