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A277877
as a simple table
n
a(n)
1
0
2
30
3
608
4
8740
5
109296
6
1269450
7
14096320
8
151927776
9
1603346160
10
16659866938
11
171064877280
[0,30,608,8740,109296,1269450,14096320,151927776, 1603346160,16659866938,171064877280]