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A223189 as a simple table

na(n)
19
281
3256
42500
519044
6149769
71306449
811573604
998962704
10945378009
118103240324
1271267107681
13649113816976
145922783740329
1551729783444964
16469159715409025
174214751562369924
1837759790203876225
19340491211679997504

[9,81,256,2500,19044,149769,1306449,11573604,
 98962704,945378009,8103240324,71267107681,
 649113816976,5922783740329,51729783444964,
 469159715409025,4214751562369924,
 37759790203876225,340491211679997504]