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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”).

A378274 as a simple table

na(n)
10
20
30
40
51
62
73
84
95
109
1111
1217
1319
1425
1531
1640
1748
1859

[0,0,0,0,1,2,3,4,5,9,11,17,19,25,31,40,48,59]