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A355839 as a simple table

na(n)
15
225
3133
4357
51013
61637
73761
85561
99313
1013065
1121689
1225357
1341553
1450157
1566005
1684897
17117793
18129841
19181717
20198857
21251189
22302293
23383161
24401073
25517193
26587041
27687765
28763425
29949869
30966249
311234425
321320913
331512233
341703657
351912765
362023569
372475361
382649813
392934997

[5,25,133,357,1013,1637,3761,5561,9313,13065,
 21689,25357,41553,50157,66005,84897,117793,129841,
 181717,198857,251189,302293,383161,401073,517193,
 587041,687765,763425,949869,966249,1234425,
 1320913,1512233,1703657,1912765,2023569,2475361,
 2649813,2934997]