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A177553 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 5039
8 40305
9 362682
10 3626190
11 39881160
12 478490760
13 6219298800
14 87055051511
15 1305598835941
16 20885951018102
17 354999461960226
18 6388879812001704
19 121367620532150280
20 2426930566055020080
21 50956684690331669759
22 1120852238721212726609

[1,1,2,6,24,120,720,5039,40305,362682,3626190,
 39881160,478490760,6219298800,87055051511,
 1305598835941,20885951018102,354999461960226,
 6388879812001704,121367620532150280,
 2426930566055020080,50956684690331669759,
 1120852238721212726609]

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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)