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A175167 as a simple table

n a(n)
1 0
2 1
3 1
4 6
5 7
6 36
7 45
8 220
9 286
10 1365
11 1820
12 8568
13 11628
14 54264
15 74613
16 346104
17 480700
18 2220075
19 3108105
20 14307150
21 20160075
22 92561040
23 131128140
24 600805296
25 854992152
26 3910797436
27 5586853480
28 25518731280
29 36576848168
30 166871334960

[0,1,1,6,7,36,45,220,286,1365,1820,8568,11628,
 54264,74613,346104,480700,2220075,3108105,
 14307150,20160075,92561040,131128140,600805296,
 854992152,3910797436,5586853480,25518731280,
 36576848168,166871334960]

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Last modified October 25 11:13 EDT 2021. Contains 348246 sequences. (Running on oeis4.)