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A305416
as a simple table
n
a(n)
1
420
2
660
3
840
4
1092
5
1155
6
1320
7
1380
8
1428
9
1540
10
1848
11
1995
12
3003
13
3315
[420,660,840,1092,1155,1320,1380,1428,1540,1848, 1995,3003,3315]