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A020498 as a simple table

n a(n)
1 1
2 3
3 7
4 9
5 13
6 19
7 21
8 27
9 31
10 33
11 37
12 43
13 49
14 51
15 57
16 63
17 69
18 73
19 79
20 87
21 91
22 97
23 99
24 103
25 111
26 117
27 121
28 129
29 133
30 139
31 141
32 147
33 153
34 157
35 159
36 163
37 169
38 177
39 183
40 187
41 189
42 199
43 201
44 211
45 213
46 217
47 231
48 241
49 243
50 247
51 253
52 261
53 267
54 271
55 273
56 279
57 283
58 289

[1,3,7,9,13,19,21,27,31,33,37,43,49,51,57,63,69,
 73,79,87,91,97,99,103,111,117,121,129,133,139,141,
 147,153,157,159,163,169,177,183,187,189,199,201,
 211,213,217,231,241,243,247,253,261,267,271,273,
 279,283,289]

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Last modified January 18 16:27 EST 2020. Contains 331011 sequences. (Running on oeis4.)