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A179469 as a simple table

n a(n)
0 1
1 2
2 8
3 32
4 140
5 624
6 2928
7 14048
8 69200
9 347040
10 1768120
11 9122144
12 47572128
13 250341312
14 1327718272
15 7089595552
16 38082093120
17 205638343552
18 1115635692576
19 6078058719232
20 33239328613648
21 182402290944576
22 1004073853702320

[1,2,8,32,140,624,2928,14048,69200,347040,1768120,
 9122144,47572128,250341312,1327718272,7089595552,
 38082093120,205638343552,1115635692576,
 6078058719232,33239328613648,182402290944576,
 1004073853702320]

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Last modified December 1 22:12 EST 2021. Contains 349435 sequences. (Running on oeis4.)