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”).

A060840 as a simple table

na(n)
11
22
33
43
56
69
79
818
99
109
1118
1227
1327
1454
1581
1681
17162
1854
1954
20108
21162
22162
23324
24486
25486
26972
2727
2827
2954
3081
3181
32162
33243
34243
35486
36243
37243
38486
39729
40729
411458
422187
432187
444374
451458
461458
472916
484374
494374
508748
5113122
5213122
5326244
54405
55405
56810

[1,2,3,3,6,9,9,18,9,9,18,27,27,54,81,81,162,54,54,
 108,162,162,324,486,486,972,27,27,54,81,81,162,
 243,243,486,243,243,486,729,729,1458,2187,2187,
 4374,1458,1458,2916,4374,4374,8748,13122,13122,
 26244,405,405,810]