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A009700 as a simple table

na(n)
00
12
216
3432
423168
52039040
6265344000
747773128704
811359970459648
93446710775119872
101299134788619468800
11595445934379289804800
12326113437715996197519360
13210324874581761164037849088

[0,2,16,432,23168,2039040,265344000,47773128704,
 11359970459648,3446710775119872,
 1299134788619468800,595445934379289804800,
 326113437715996197519360,
 210324874581761164037849088]