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A100305 as a simple table

n a(n)
0 1
1 1
2 5
3 9
4 45
5 113
6 469
7 1369
8 5117
9 16065
10 56997
11 185513
12 641485
13 2125585
14 7257461
15 24262137
16 82321821
17 276418913
18 934993477
19 3146344777
20 10626292589
21 35797050801
22 120807391509
23 407183797913
24 1373642929981
25 4631113313281

[1,1,5,9,45,113,469,1369,5117,16065,56997,185513,
 641485,2125585,7257461,24262137,82321821,
 276418913,934993477,3146344777,10626292589,
 35797050801,120807391509,407183797913,
 1373642929981,4631113313281]

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Last modified January 25 19:00 EST 2022. Contains 350572 sequences. (Running on oeis4.)