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A038455 as a simple table

n a(n)
1 1
2 3
3 1
4 20
5 9
6 1
7 210
8 107
9 18
10 1
11 3024
12 1650
13 335
14 30
15 1
16 55440
17 31594
18 7155
19 805
20 45
21 1
22 1235520
23 725592
24 176554
25 22785
26 1645
27 63
28 1
29 32432400
30 19471500
31 4985316
32 705649
33 59640
34 3010
35 84
36 1
37 980179200
38 598482000
39 159168428
40 24083892
41 2267769

[1,3,1,20,9,1,210,107,18,1,3024,1650,335,30,1,
 55440,31594,7155,805,45,1,1235520,725592,176554,
 22785,1645,63,1,32432400,19471500,4985316,705649,
 59640,3010,84,1,980179200,598482000,159168428,
 24083892,2267769]

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)