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A152340 as a simple table

n a(n)
1 1
2 2
3 6
4 24
5 120
6 672
7 4260
8 29280
9 242724
10 2159176
11 20864844
12 223065582
13 2583122958
14 31759066828
15 413564101194
16 5777537336826 

[1,2,6,24,120,672,4260,29280,242724,2159176,
 20864844,223065582,2583122958,31759066828,
 413564101194,5777537336826]

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Last modified August 10 19:25 EDT 2024. Contains 375058 sequences. (Running on oeis4.)