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A257357 as a simple table

na(n)
112100
220449
345796
4101124
5246016
6622521
71249924
82598544
96200100
1015225604
1131651876
1268244121
13158860816
14378146916
15806332816
161776622500
174052850244
189490461561
1920534890000
2045856367881
21103396974916
22239629830400

[12100,20449,45796,101124,246016,622521,1249924,
 2598544,6200100,15225604,31651876,68244121,
 158860816,378146916,806332816,1776622500,
 4052850244,9490461561,20534890000,45856367881,
 103396974916,239629830400]