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A293454 as a simple table

na(n)
11
25
3-60
42700
5-164160
613374720
7-1317409920
8151766835840
9-19941590880000
102939103216990720
11-479988532980633600
1286040885120291532800
13-16800662989461441945600
143550863374378300399616000
15-807913791223460628810301440
16196952399633420675888256368640

[1,5,-60,2700,-164160,13374720,-1317409920,
 151766835840,-19941590880000,2939103216990720,
 -479988532980633600,86040885120291532800,
 -16800662989461441945600,
 3550863374378300399616000,
 -807913791223460628810301440,
 196952399633420675888256368640]