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A258477 as a simple table

na(n)
71
89
946
10175
11551
121517
133775
148677
1518702
1638221
1774670
18140380
19255200
20450587
21775050
221302820
232144491
243464614
255501502
268601609
2713254960
2820160072
2930285308
3044987881
3166117110
3296226698
33138744972
34198343467
35281212898
36395689440
37552693604
38766773242

[1,9,46,175,551,1517,3775,8677,18702,38221,74670,
 140380,255200,450587,775050,1302820,2144491,
 3464614,5501502,8601609,13254960,20160072,
 30285308,44987881,66117110,96226698,138744972,
 198343467,281212898,395689440,552693604,766773242]