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A337040 as a simple table

n a(n)
0 1
1 0
2 4
3 16
4 112
5 896
6 8384
7 88320
8 1032448
9 13242368
10 184591360
11 2773929984
12 44641579008
13 765196926976
14 13905753980928
15 266855007453184
16 5388980396818432
17 114172599765827584
18 2530858142594760704
19 58556990344729198592
20 1411095950792925904896
21 35347148031264582270976

[1,0,4,16,112,896,8384,88320,1032448,13242368,
 184591360,2773929984,44641579008,765196926976,
 13905753980928,266855007453184,5388980396818432,
 114172599765827584,2530858142594760704,
 58556990344729198592,1411095950792925904896,
 35347148031264582270976]

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Last modified June 11 00:13 EDT 2024. Contains 373283 sequences. (Running on oeis4.)