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A338439 as a simple table

n a(n)
0 1
1 1
2 0
3 3
4 8
5 50
6 144
7 2394
8 8448
9 89424
10 576000
11 20124720
12 57231360
13 3213905760
14 11285084160
15 217204092000
16 2843121254400
17 187660890063360
18 558255985459200
19 64849189355274240
20 239933887119360000
21 8405611881201561600
22 116110668405473280000
23 13912098832249673932800

[1,1,0,3,8,50,144,2394,8448,89424,576000,20124720,
 57231360,3213905760,11285084160,217204092000,
 2843121254400,187660890063360,558255985459200,
 64849189355274240,239933887119360000,
 8405611881201561600,116110668405473280000,
 13912098832249673932800]

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)