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A032174 as a simple table

n a(n)
1 2
2 1
3 4
4 15
5 66
6 291
7 1368
8 6555
9 32262
10 161505
11 821280
12 4227710
13 21996052
14 115469442
15 610894004
16 3253836785
17 17434360442
18 93907348819
19 508194420136
20 2761768079091
21 15065823780102
22 82469439357341

[2,1,4,15,66,291,1368,6555,32262,161505,821280,
 4227710,21996052,115469442,610894004,3253836785,
 17434360442,93907348819,508194420136,
 2761768079091,15065823780102,82469439357341]

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Last modified March 28 13:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)