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A206821 as a simple table

na(n)
12
23
37
48
510
614
716
818
921
1023
1129
1231
1335
1441
1542
1644
1748
1850
1954
2056
2160
2262
2366
2470
2572
2676
2778
2880
2982
3084
3186
3288
3393
3497
3599
36103
37109
38111
39115
40117
41123
42125
43129
44131
45137
46141
47143
48147
49153
50155
51159
52161
53165
54167
55171
56173
57179
58183
59186
60188

[2,3,7,8,10,14,16,18,21,23,29,31,35,41,42,44,48,
 50,54,56,60,62,66,70,72,76,78,80,82,84,86,88,93,
 97,99,103,109,111,115,117,123,125,129,131,137,141,
 143,147,153,155,159,161,165,167,171,173,179,183,
 186,188]