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A258923 as a simple table

na(n)
01
13
239
3948
434401
51671708
6102120555
77525926516
8650110587933
964441071121980
107211152872419151
11899320094627287908
12123696462771198530265
1318603242077944140548428
143037136136248214142833747
15534943432937469380612083284
16101114708570035662524213928981
1720416341060201627868414787791068

[1,3,39,948,34401,1671708,102120555,7525926516,
 650110587933,64441071121980,7211152872419151,
 899320094627287908,123696462771198530265,
 18603242077944140548428,3037136136248214142833747,
 534943432937469380612083284,
 101114708570035662524213928981,
 20416341060201627868414787791068]