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A167140 as a simple table

na(n)
01
14
224
3416
434400
513561728
622961051392
7160934805885952
84612329945733989888
9537318814887463743641600
10253532269357851227988228362240
11483356648964255814869226601582346240

[1,4,24,416,34400,13561728,22961051392,
 160934805885952,4612329945733989888,
 537318814887463743641600,
 253532269357851227988228362240,
 483356648964255814869226601582346240]