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A120087 as a simple table

na(n)
01
15
218
31
41440
51
675600
71
83628800
91
10167650560
111
125230697472000
131
14336259123200
151
1653353114214400000
171
1828100018194440192000
191
204817145976189747200000
211
2291657150256046735360000
231

[1,5,18,1,1440,1,75600,1,3628800,1,167650560,1,
 5230697472000,1,336259123200,1,53353114214400000,
 1,28100018194440192000,1,4817145976189747200000,1,
 91657150256046735360000,1]