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A057644
as a simple table
n
a(n)
1
19
2
523
3
15823
4
655453
5
19256491
6
24084793
7
303392377
8
3408167431
9
17875882441
10
179445819277
11
1563518842687
[19,523,15823,655453,19256491,24084793,303392377, 3408167431,17875882441,179445819277,1563518842687]