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”).

A200266 as a simple table

na(n)
11
23
33
43
55
65
75
87
93
103
117
129
1311
1417
155
163
1713
1817
1915
2021
215
229
2321
2419
259
2613
273
285
2921
3017

[1,3,3,3,5,5,5,7,3,3,7,9,11,17,5,3,13,17,15,21,5,
 9,21,19,9,13,3,5,21,17]