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A283344 as a simple table

n a(n)
1 0
2 120
3 4398
4 106310
5 2519010
6 55886238
7 1199035122
8 25121756412
9 516765464924
10 10481845883142
11 210231077785162
12 4177968654531772
13 82397091799471253
14 1614546135120979278
15 31461824683588609937
16 610146651185924046854 

[0,120,4398,106310,2519010,55886238,1199035122,
 25121756412,516765464924,10481845883142,
 210231077785162,4177968654531772,
 82397091799471253,1614546135120979278,
 31461824683588609937,610146651185924046854]

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Last modified December 10 11:10 EST 2023. Contains 367710 sequences. (Running on oeis4.)