A068690 - OEIS

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A068690 as a simple table

n	a(n)
1	2
2	3
3	5
4	7
5	23
6	29
7	41
8	43
9	47
10	61
11	67
12	83
13	89
14	223
15	227
16	229
17	241
18	263
19	269
20	281
21	283
22	401
23	409
24	421
25	443
26	449
27	461
28	463
29	467
30	487
31	601
32	607
33	641
34	643
35	647
36	661
37	683
38	809
39	821
40	823
41	827
42	829
43	863
44	881
45	883
46	887
47	2003
48	2027
49	2029
50	2063
51	2069
52	2081
53	2083
54	2087

[2,3,5,7,23,29,41,43,47,61,67,83,89,223,227,229, 241,263,269,281,283,401,409,421,443,449,461,463, 467,487,601,607,641,643,647,661,683,809,821,823, 827,829,863,881,883,887,2003,2027,2029,2063,2069, 2081,2083,2087]