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A033588
as a simple table
n
a(n)
0
0
1
6
2
28
3
66
4
120
5
190
6
276
7
378
8
496
9
630
10
780
11
946
12
1128
13
1326
14
1540
15
1770
16
2016
17
2278
[0,6,28,66,120,190,276,378,496,630,780,946,1128, 1326,1540,1770,2016,2278]