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A005460 as a simple table

na(n)
01
17
250
3390
43360
531920
6332640
73780000
846569600
9618710400
108821612800
11134399865600
122179457280000
1337486665216000
14681734237184000
1513071512982528000
16263564384219136000
175575400435404800000
18123469776914964480000
192856835183101419520000

[1,7,50,390,3360,31920,332640,3780000,46569600,
 618710400,8821612800,134399865600,2179457280000,
 37486665216000,681734237184000,13071512982528000,
 263564384219136000,5575400435404800000,
 123469776914964480000,2856835183101419520000]