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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”).

A177800 as a simple table

na(n)
11
23
36
49
511
615
717
818
922
1023
1125
1226
1328
1429
1533
1634
1735
1836
1938
2039
2142

[1,3,6,9,11,15,17,18,22,23,25,26,28,29,33,34,35,
 36,38,39,42]