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A049215 as a simple table

na(n)
01
140
22464
3229760
430633856
55561407488
61322489954304
7399463775797248
8149519094622027776
967960463478175825920
1036884466463352967659520
1123566236397584291201024000
1217511732541318788803985408000

[1,40,2464,229760,30633856,5561407488,
 1322489954304,399463775797248,149519094622027776,
 67960463478175825920,36884466463352967659520,
 23566236397584291201024000,
 17511732541318788803985408000]