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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”).

A228440 as a simple table

na(n)
11
211
3121
4253
51331
62783
75819
811891
914641
1029161
1130613
1264009
13130801
14133837
15161051
16273493
17320771
18336743
19558877
20640343
21670703
22704099
23895873
241438811
251472207
261771561
273008423
283078251
293528481
303544453
313704173
326147647
336290339
347027801

[1,11,121,253,1331,2783,5819,11891,14641,29161,
 30613,64009,130801,133837,161051,273493,320771,
 336743,558877,640343,670703,704099,895873,1438811,
 1472207,1771561,3008423,3078251,3528481,3544453,
 3704173,6147647,6290339,7027801]