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A257427 as a simple table

na(n)
12616
27652
327244
4103575
5367929
61246585
74137316
813275095
941621545
10128299778
11389217704
121165610625
133456006395
1410159155410
1529647440717
1685997742083
17248174114409
18713062049952
192041229428915
205824856350604

[2616,7652,27244,103575,367929,1246585,4137316,
 13275095,41621545,128299778,389217704,1165610625,
 3456006395,10159155410,29647440717,85997742083,
 248174114409,713062049952,2041229428915,
 5824856350604]