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A204604 as a simple table

na(n)
116247580
240672735
343980907
469792825
5207096000
61139760144
76656676736
861015724528
9513802492708
103004591151584
1127074363705888
12227330083011172
131328325507137504
1411969420064914272
15100501902404767796

[16247580,40672735,43980907,69792825,207096000,
 1139760144,6656676736,61015724528,513802492708,
 3004591151584,27074363705888,227330083011172,
 1328325507137504,11969420064914272,
 100501902404767796]