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A173355
as a simple table
n
a(n)
1
2
2
3
3
48
4
73
5
436
6
23494
7
37381
8
621706
9
781913
10
2351612
11
49301348
12
96493921
13
141630007
[2,3,48,73,436,23494,37381,621706,781913,2351612, 49301348,96493921,141630007]