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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”).

A048262 as a simple table

na(n)
11
22
34
45
56
68
79
812
913
1015
1116
1217
1320
1424
1525
1627
1728
1832
1935
2036
2139
2248
2351
2455

[1,2,4,5,6,8,9,12,13,15,16,17,20,24,25,27,28,32,
 35,36,39,48,51,55]