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A301402 as a simple table

n a(n)
1 4
2 32
3 252
4 1988
5 15680
6 123676
7 975492
8 7694176
9 60687676
10 478672964
11 3775524480
12 29779382108
13 234884346116
14 1852646097568
15 14612713105788
16 115257514423492
17 909091592704960
18 7170443749899164
19 56556747398228868
20 446090338036896224 

[4,32,252,1988,15680,123676,975492,7694176,
 60687676,478672964,3775524480,29779382108,
 234884346116,1852646097568,14612713105788,
 115257514423492,909091592704960,7170443749899164,
 56556747398228868,446090338036896224]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)