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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A033588 as a simple table

na(n)
00
16
228
366
4120
5190
6276
7378
8496
9630
10780
11946
121128
131326
141540
151770
162016
172278

[0,6,28,66,120,190,276,378,496,630,780,946,1128,
 1326,1540,1770,2016,2278]