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A226263 as a simple table

na(n)
16
2560
3714240
413158776832
53664870461407232
615851823599503498280960
71080418693368712791570241290240
81169153808560040142520024286639230550016
920164369771081510946277302795802821049707120295936
105553565410774406546950324330177622130219698528711309315276800

[6,560,714240,13158776832,3664870461407232,
 15851823599503498280960,
 1080418693368712791570241290240,
 1169153808560040142520024286639230550016,
 20164369771081510946277302795802821049707120295936\
 ,
 55535654107744065469503243301776221302196985287113\
 09315276800]