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A221352 as a simple table

n a(n)
1 0
2 1
3 18
4 148
5 1164
6 8824
7 65932
8 489456
9 3622896
10 26780480
11 197840840
12 1461141856
13 10789799120
14 79672591776
15 588291947152
16 4343817165312
17 32073601733504
18 236822417610560
19 1748627793559200
20 12911351644960960
21 95333587133290624

[0,1,18,148,1164,8824,65932,489456,3622896,
 26780480,197840840,1461141856,10789799120,
 79672591776,588291947152,4343817165312,
 32073601733504,236822417610560,1748627793559200,
 12911351644960960,95333587133290624]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)