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A028926 as a simple table

n a(n)
0 0
1 1
2 3
3 6
4 12
5 20
6 36
7 46
8 66
9 90
10 138
11 216
12 378
13 459
14 616
15 873
16 1645
17 2133 

[0,1,3,6,12,20,36,46,66,90,138,216,378,459,616,
 873,1645,2133]

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Last modified June 5 09:45 EDT 2024. Contains 373105 sequences. (Running on oeis4.)