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A073508
as a simple table
n
a(n)
1
0
2
5
3
38
4
303
5
2390
6
19593
7
166032
8
1440186
9
12711333
10
113761326
11
1029509896
12
9401974132
13
86516371101
[0,5,38,303,2390,19593,166032,1440186,12711333, 113761326,1029509896,9401974132,86516371101]