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”).

A026195 as a simple table

na(n)
11
22
33
49
54
65
715
86
97
1021
118
1225
1327
1410
1511
1633
1712
1813
1939
2014
2143
2245
2316
2417
2551
2618
2719
2857
2920
3061
3163
3222
3323
3469
3524
3673
3775
3826
3979
4081
4128
4229
4387
4430
4531
4693
4732
4897
4999
5034
5135
52105
5336
5437
55111
5638
57115
58117
5940
6041
61123
6242

[1,2,3,9,4,5,15,6,7,21,8,25,27,10,11,33,12,13,39,
 14,43,45,16,17,51,18,19,57,20,61,63,22,23,69,24,
 73,75,26,79,81,28,29,87,30,31,93,32,97,99,34,35,
 105,36,37,111,38,115,117,40,41,123,42]