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A023668 as a simple table

na(n)
12
25
37
412
518
622
728
833
938
1046
1153
1261
1370
1477
1585
1693
17100
18109
19116
20126
21137
22147
23158
24168
25178
26190
27199
28210
29221
30230
31242
32252
33262
34274
35285
36299
37312
38324
39339
40350
41364
42377
43390
44404
45416
46429
47444
48455
49469
50482
51494
52509
53521

[2,5,7,12,18,22,28,33,38,46,53,61,70,77,85,93,100,
 109,116,126,137,147,158,168,178,190,199,210,221,
 230,242,252,262,274,285,299,312,324,339,350,364,
 377,390,404,416,429,444,455,469,482,494,509,521]