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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”).

A325681 as a simple table

na(n)
11
21
32
42
53
63
76
86
911
109
1116
1216
1327
1423
1546
1642
1773
1863
19112
20102

[1,1,2,2,3,3,6,6,11,9,16,16,27,23,46,42,73,63,112,
 102]