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”).

A106307 as a simple table

na(n)
13
25
323
431
537
659
767
871
989
1097
11103
12113
13137
14157
15179
16181
17191
18223
19229
20251
21313
22317
23331
24353
25367
26379
27383
28389
29433
30443
31449
32463
33467
34487
35509
36521
37577
38587
39619
40631
41641
42643
43647
44653
45661
46691
47709
48719
49727
50751
51797
52823
53829

[3,5,23,31,37,59,67,71,89,97,103,113,137,157,179,
 181,191,223,229,251,313,317,331,353,367,379,383,
 389,433,443,449,463,467,487,509,521,577,587,619,
 631,641,643,647,653,661,691,709,719,727,751,797,
 823,829]