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A025609 as a simple table

n a(n)
0 0
1 1
2 6
3 64
4 720
5 9136
6 122016
7 1673344
8 23216640
9 323773696
10 4525272576
11 63308468224
12 886046453760
13 12403017773056
14 173632453287936
15 2430795572936704
16 34030785382318080
17 476428879520137216
18 6669991618287108096
19 93379806486052470784
20 1307316833784928665600

[0,1,6,64,720,9136,122016,1673344,23216640,
 323773696,4525272576,63308468224,886046453760,
 12403017773056,173632453287936,2430795572936704,
 34030785382318080,476428879520137216,
 6669991618287108096,93379806486052470784,
 1307316833784928665600]

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Last modified September 26 14:21 EDT 2022. Contains 356999 sequences. (Running on oeis4.)