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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”).

A098159 as a simple table

na(n)
11
217
318
420
521
637
738
840
941
1057
1158
1260
1361
1477
1578
1680
1781
1897
1998

[1,17,18,20,21,37,38,40,41,57,58,60,61,77,78,80,
 81,97,98]