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A257017 as a simple table

na(n)
115066
2311364
3311364
46508512
514776336
66508512
7136048896
8717382656
9717382656
10136048896
112834352000
1234828517376
1382198167552
1434828517376
152834352000
1659049000000
171679616000000
189418319069184
199418319069184

[15066,311364,311364,6508512,14776336,6508512,
 136048896,717382656,717382656,136048896,
 2834352000,34828517376,82198167552,34828517376,
 2834352000,59049000000,1679616000000,
 9418319069184,9418319069184]