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A134278 as a simple table

n a(n)
1 1
2 6
3 1
4 66
5 18
6 1
7 1056
8 264
9 108
10 36
11 1
12 22176
13 5280
14 3960
15 660
16 540
17 60
18 1
19 576576
20 133056
21 95040
22 43560
23 15840
24 23760
25 3240
26 1320
27 1620
28 90
29 1
30 17873856
31 4036032
32 2794176
33 2439360
34 465696
35 665280
36 304920
37 249480
38 36960
39 83160
40 22680
41 2310

[1,6,1,66,18,1,1056,264,108,36,1,22176,5280,3960,
 660,540,60,1,576576,133056,95040,43560,15840,
 23760,3240,1320,1620,90,1,17873856,4036032,
 2794176,2439360,465696,665280,304920,249480,36960,
 83160,22680,2310]

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Last modified August 6 19:52 EDT 2020. Contains 336256 sequences. (Running on oeis4.)