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A146851 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 5
10 13
11 25
12 45
13 129
14 391
15 1245
16 4737
17 21985
18 95961
19 496289
20 2673135
21 16997063
22 114065803

[1,1,1,1,1,1,1,1,5,13,25,45,129,391,1245,4737,
 21985,95961,496289,2673135,16997063,114065803]

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Last modified December 10 22:20 EST 2023. Contains 367717 sequences. (Running on oeis4.)