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”).

A161540 as a simple table

na(n)
15
211
313
423
531
667
773
897
9107
10109
11113
12137
13139
14157
15163
16167
17197
18199
19211
20233
21239
22251
23257
24269
25271
26293
27307
28311
29313
30331
31337
32347
33353
34359
35367
36373
37401
38409
39449
40457
41479
42487
43491
44503
45541
46547
47569
48571
49577
50587
51593
52607
53613
54617

[5,11,13,23,31,67,73,97,107,109,113,137,139,157,
 163,167,197,199,211,233,239,251,257,269,271,293,
 307,311,313,331,337,347,353,359,367,373,401,409,
 449,457,479,487,491,503,541,547,569,571,577,587,
 593,607,613,617]