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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”).

A266000 as a simple table

na(n)
19
221
325
427
533
635
739
845
949
1050
1151
1255
1357
1463
1565
1669
1770
1875
1977
2081
2185
2287
2391
2493
2595
2698
2799
28105
29110
30111
31115
32117
33119
34121
35123
36125

[9,21,25,27,33,35,39,45,49,50,51,55,57,63,65,69,
 70,75,77,81,85,87,91,93,95,98,99,105,110,111,115,
 117,119,121,123,125]