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A006440
as a simple table
n
a(n)
1
10
2
805
3
23730
4
431319
5
5862920
6
65548890
7
636520890
8
5555779185
9
44603489700
[10,805,23730,431319,5862920,65548890,636520890, 5555779185,44603489700]