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A238164 as a simple table

na(n)
01
1-1
27
3-465
448006
5-12072375
66301495035
7-12203470904625
820180112406353900
9-53495387545025175750
10216267236072968468547250
11-1280630367874799320798794375
1210743714652441927865738713818750
13-124178158916511109662405449217796875
141930915681227482441797773554892002071875

[1,-1,7,-465,48006,-12072375,6301495035,
 -12203470904625,20180112406353900,
 -53495387545025175750,216267236072968468547250,
 -1280630367874799320798794375,
 10743714652441927865738713818750,
 -124178158916511109662405449217796875,
 1930915681227482441797773554892002071875]