A336721 - OEIS

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A336721 as a simple table

n	a(n)
1	2
2	3
3	5
4	7
5	13
6	17
7	19
8	31
9	49
10	61
11	83
12	89
13	107
14	127
15	167
16	179
17	197
18	233
19	241
20	269
21	281
22	347
23	373
24	421
25	443
26	457
27	487
28	521
29	607
30	697
31	769
32	829
33	881
34	1049
35	1063

[2,3,5,7,13,17,19,31,49,61,83,89,107,127,167,179, 197,233,241,269,281,347,373,421,443,457,487,521, 607,697,769,829,881,1049,1063]