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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”).

A101728 as a simple table

na(n)
15
220
321
423
550
680
7131
8164
9620
101449
113423
125978
1311525
1426979
1549232
1684926

[5,20,21,23,50,80,131,164,620,1449,3423,5978,
 11525,26979,49232,84926]