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A184972 as a simple table

n a(n)
0 1
1 1
2 3
3 13
4 81
5 605
6 5595
7 59225
8 725985
9 9928505
10 151720275
11 2541096325
12 46541735025
13 922017392725
14 19691502952875
15 450278539452625
16 10987846186994625
17 284800630720672625
18 7817729823142243875
19 226487095510937568125
20 6907505385375525620625

[1,1,3,13,81,605,5595,59225,725985,9928505,
 151720275,2541096325,46541735025,922017392725,
 19691502952875,450278539452625,10987846186994625,
 284800630720672625,7817729823142243875,
 226487095510937568125,6907505385375525620625]

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Last modified January 18 17:18 EST 2022. Contains 350455 sequences. (Running on oeis4.)