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A032226 as a simple table

n a(n)
1 1
2 1
3 1
4 4
5 8
6 38
7 206
8 1200
9 7244
10 55112
11 581908
12 5247184
13 55925292
14 639349432
15 8767780308
16 118799034792
17 1747194021920
18 27367319522424
19 460554745080200
20 8173026498677400
21 152080799760722664

[1,1,1,4,8,38,206,1200,7244,55112,581908,5247184,
 55925292,639349432,8767780308,118799034792,
 1747194021920,27367319522424,460554745080200,
 8173026498677400,152080799760722664]

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Last modified June 28 21:04 EDT 2022. Contains 354907 sequences. (Running on oeis4.)