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A325048 as a simple table

na(n)
02
116
280000
317272267776000000
4277884245560378426290863196025651200000000
53337940951837185557810120427617693521487357301121536848574225250643001642844160000000000

[2,16,80000,17272267776000000,
 277884245560378426290863196025651200000000,
 33379409518371855578101204276176935214873573011215\
 36848574225250643001642844160000000000]