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A271614 as a simple table

n a(n)
1 1
2 4
3 26
4 307
5 7764
6 222936
7 3243689
8 132728354
9 30892003921
10 3065366376540
11 74672717363118
12 12952235029243936
13 25923218026065797712
14 11188107558636007931696
15 695394278635888843298780
16 579704015638436450676621584
17 9319830273030294425399538816052

[1,4,26,307,7764,222936,3243689,132728354,
 30892003921,3065366376540,74672717363118,
 12952235029243936,25923218026065797712,
 11188107558636007931696,695394278635888843298780,
 579704015638436450676621584,
 9319830273030294425399538816052]

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Last modified July 28 17:15 EDT 2021. Contains 346335 sequences. (Running on oeis4.)