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A064230 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 9
5 6
6 1
7 49
8 288
9 174
10 1
11 225
12 6750
13 36000
14 22560
15 1
16 961
17 118800
18 3159750
19 17760600
20 12514320
21 1
22 3969
23 1807806
24 190071000
25 5295204600
26 34395777360
27 28836612000
28 1
29 16129
30 25316928
31 9271660734
32 1001080231200
33 32307576315840

[1,1,1,1,9,6,1,49,288,174,1,225,6750,36000,22560,
 1,961,118800,3159750,17760600,12514320,1,3969,
 1807806,190071000,5295204600,34395777360,
 28836612000,1,16129,25316928,9271660734,
 1001080231200,32307576315840]

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Last modified November 22 06:06 EST 2018. Contains 317453 sequences. (Running on oeis4.)