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A177470 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 18
6 70
7 300
8 1435
9 7910
10 47376
11 316008
12 2314158
13 18331236
14 158024724
15 1462752720
16 14497475850
17 153488070450

[1,1,2,6,18,70,300,1435,7910,47376,316008,2314158,
 18331236,158024724,1462752720,14497475850,
 153488070450]

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Last modified May 24 07:02 EDT 2024. Contains 372772 sequences. (Running on oeis4.)