login

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”).

A026459 as a simple table

na(n)
11
22
33
45
56
69
711
812
914
1015
1117
1218
1319
1421
1524
1627
1729
1830
1933
2035
2137
2238

[1,2,3,5,6,9,11,12,14,15,17,18,19,21,24,27,29,30,
 33,35,37,38]