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A183583
as a simple table
n
a(n)
1
194
2
354615
3
171459557
4
92915045150
5
49526167251643
6
26548571098836075
7
14217486118795912134
[194,354615,171459557,92915045150,49526167251643, 26548571098836075,14217486118795912134]