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”).

A118555 as a simple table

na(n)
11
23
37
49
521
625
743
849
963
1067
1169
1287
13111
14115
15133
16135
17151
18159
19171
20193
21195
22201
23205
24223
25241
26261
27267
28283
29285
30319
31331
32339
33357
34391
35393
36399
37409
38421
39427
40429
41463
42483
43489
44511
45517
46519
47535
48537
49553
50579
51591
52601
53621
54643
55645

[1,3,7,9,21,25,43,49,63,67,69,87,111,115,133,135,
 151,159,171,193,195,201,205,223,241,261,267,283,
 285,319,331,339,357,391,393,399,409,421,427,429,
 463,483,489,511,517,519,535,537,553,579,591,601,
 621,643,645]