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A257072 as a simple table

na(n)
01
14
217
377
4374
51959
611085
767500
8438485
93004985
1021485222
11158744467
121202966761
139297312916
1472981656937
15580105886517
164658713796790
1737736326098735
18307913254091925
192528335636842300
2020875157745756429

[1,4,17,77,374,1959,11085,67500,438485,3004985,
 21485222,158744467,1202966761,9297312916,
 72981656937,580105886517,4658713796790,
 37736326098735,307913254091925,2528335636842300,
 20875157745756429]