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A263763 as a simple table

n a(n)
1 0
2 0
3 1
4 4
5 31
6 146
7 1289
8 7736
9 68811
10 354568
11 2562282
12 12614090
13 80560052
14 406847624
15 2530379183
16 13576171696
17 85562497735
18 476311791218
19 2983359368303
20 16861046247216
21 104017882519889
22 591843352618090
23 3599197579892399

[0,0,1,4,31,146,1289,7736,68811,354568,2562282,
 12614090,80560052,406847624,2530379183,
 13576171696,85562497735,476311791218,
 2983359368303,16861046247216,104017882519889,
 591843352618090,3599197579892399]

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Last modified February 25 13:12 EST 2024. Contains 370330 sequences. (Running on oeis4.)