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A073974 as a simple table

n a(n)
1 0
2 1
3 9
4 54
5 210
6 1008
7 6300
8 40824
9 262440
10 1679616
11 10478160
12 62868960
13 369476640
14 2176782336
15 12958657344
16 77751944064
17 468205557120
18 2820249944064
19 16957996040448
20 101758315958784
21 609954817881600
22 3656158440062976
23 21926486787222528
24 131558920723335168

[0,1,9,54,210,1008,6300,40824,262440,1679616,
 10478160,62868960,369476640,2176782336,
 12958657344,77751944064,468205557120,
 2820249944064,16957996040448,101758315958784,
 609954817881600,3656158440062976,
 21926486787222528,131558920723335168]

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Last modified September 16 10:53 EDT 2024. Contains 375965 sequences. (Running on oeis4.)