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”).

A126587 as a simple table

na(n)
13
217
343
481
5131
6193
7267
8353
9451
10561
11683
12817
13963
141121
151291
161473
171667
181873
192091
202321
212563
222817
233083
243361
253651
263953
274267
284593
294931
305281
315643
326017
336403
346801
357211
367633
378067
388513
398971
409441
419923
4210417
4310923
4411441

[3,17,43,81,131,193,267,353,451,561,683,817,963,
 1121,1291,1473,1667,1873,2091,2321,2563,2817,3083,
 3361,3651,3953,4267,4593,4931,5281,5643,6017,6403,
 6801,7211,7633,8067,8513,8971,9441,9923,10417,
 10923,11441]