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A156286 as a simple table

n a(n)
1 1
2 1
3 10
4 1
5 140
6 1419
7 1
8 5740
9 242649
10 3350536
11 1
12 700280
13 165729267
14 7853656384
15 161827775045
16 1
17 255602200
18 452606628177
19 92036999164096
20 6040221703554625
21 193317016162131576
22 1
23 279628806800
24 4943822199577371
25 5392815929021041024
26 1352701610289354714125
27 132670761753844630766736
28 6731905265314349384346775

[1,1,10,1,140,1419,1,5740,242649,3350536,1,700280,
 165729267,7853656384,161827775045,1,255602200,
 452606628177,92036999164096,6040221703554625,
 193317016162131576,1,279628806800,
 4943822199577371,5392815929021041024,
 1352701610289354714125,132670761753844630766736,
 6731905265314349384346775]

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Last modified January 22 09:39 EST 2022. Contains 350481 sequences. (Running on oeis4.)