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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”).

A088202 as a simple table

na(n)
11
24
35
45
55
67
77
89
910
1011
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2121
2222
2323
2424
2525
2626

[1,4,5,5,5,7,7,9,10,11,11,12,13,14,15,16,17,18,19,
 20,21,22,23,24,25,26]