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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”).

A145804 as a simple table

na(n)
10
20
31
42
52
64
76
87
99
1012
1113
1216
1320
1422
1525
1630
1732
1836

[0,0,1,2,2,4,6,7,9,12,13,16,20,22,25,30,32,36]