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A252641 as a simple table

na(n)
1572
21013
31758
43162
56598
613038
724852
851396
9102832
10196692
11406087
12815173
131564506
143229898
156492686
1612499511
1725777034
1851870487
19100142925
20206228256
21415426219
22804167670
231653389401
243334113495
256470363703
2613279927241

[572,1013,1758,3162,6598,13038,24852,51396,102832,
 196692,406087,815173,1564506,3229898,6492686,
 12499511,25777034,51870487,100142925,206228256,
 415426219,804167670,1653389401,3334113495,
 6470363703,13279927241]