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A320737 as a simple table

n a(n)
0 1
1 1
2 3
3 7
4 20
5 63
6 233
7 965
8 4425
9 21904
10 114910
11 628754
12 3544272
13 20393306
14 118986963
15 700768255
16 4152987416
17 24714368292
18 147480695339
19 881688073414
20 5277421580515
21 31613933962624
22 189481916086717
23 1136086826214117
24 6813308511956936
25 40867019987219945

[1,1,3,7,20,63,233,965,4425,21904,114910,628754,
 3544272,20393306,118986963,700768255,4152987416,
 24714368292,147480695339,881688073414,
 5277421580515,31613933962624,189481916086717,
 1136086826214117,6813308511956936,
 40867019987219945]

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Last modified June 2 13:01 EDT 2023. Contains 363097 sequences. (Running on oeis4.)