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A088229 as a simple table

na(n)
01
12
212
3336
443680
524165120
653981544960
7476410007808000
816517640193528320000
92252801478912508197273600
101212983979979000042023881932800
112587892965783744956308448364029542400
1221943955209199862746410706867184116563968000

[1,2,12,336,43680,24165120,53981544960,
 476410007808000,16517640193528320000,
 2252801478912508197273600,
 1212983979979000042023881932800,
 2587892965783744956308448364029542400,
 21943955209199862746410706867184116563968000]