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A340120 as a simple table

na(n)
19
215
325
427
545
675
791
8121
9125
10135
11143
12147
13175
14225
15275
16325
17375
18441
19483
20625
21675
22735
23755
241125
251323
261547
271573
281875
291935
302015
312205
322275
332485
342943
353025
363125
373375
383575
393675
403775
413843
424375
435525
445625
455819
466543
476615
486721

[9,15,25,27,45,75,91,121,125,135,143,147,175,225,
 275,325,375,441,483,625,675,735,755,1125,1323,
 1547,1573,1875,1935,2015,2205,2275,2485,2943,3025,
 3125,3375,3575,3675,3775,3843,4375,5525,5625,5819,
 6543,6615,6721]