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A177550 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 4950
8 38880
9 343440
10 3369600
11 36352800
12 427680000
13 5452027218
14 74846801304
15 1100895311340
16 17272089457920
17 287920937620800
18 5081935953473280
19 94681381716805374
20 1856848184953043760
21 38236452673395920040
22 824863858830361247040

[1,1,2,6,24,120,720,4950,38880,343440,3369600,
 36352800,427680000,5452027218,74846801304,
 1100895311340,17272089457920,287920937620800,
 5081935953473280,94681381716805374,
 1856848184953043760,38236452673395920040,
 824863858830361247040]

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Last modified April 30 12:47 EDT 2024. Contains 372134 sequences. (Running on oeis4.)