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A257015 as a simple table

na(n)
1311364
214776336
3717382656
434828517376
51679616000000
681000000000000
73914754624000000
8189201281063325696
99137230462068166656
10441270693558373257216
1121316458288287242358784
121029733903904001158025216

[311364,14776336,717382656,34828517376,
 1679616000000,81000000000000,3914754624000000,
 189201281063325696,9137230462068166656,
 441270693558373257216,21316458288287242358784,
 1029733903904001158025216]