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A293992 as a simple table

na(n)
18
2115
3187
41375
52455
68143
713543
818261
921103
1023479
1140615
1241623
1343279
1449183
1549441
1651703
1756743
1861063
1961279
2061423
2189287
2295551
23137887
24214303
25331567
26379807
27476071
28715471
291422871
301515967
311793527
321977127
332431087
343098527
353663871

[8,115,187,1375,2455,8143,13543,18261,21103,23479,
 40615,41623,43279,49183,49441,51703,56743,61063,
 61279,61423,89287,95551,137887,214303,331567,
 379807,476071,715471,1422871,1515967,1793527,
 1977127,2431087,3098527,3663871]