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A106206 as a simple table

na(n)
01
16
2-414
338916
4-4144554
5472479156
6-56225019564
76891580969416
8-863170516419354
9109910379090731076
10-14178438902704308804
111848352853316179893176
12-243058400211077655952644

[1,6,-414,38916,-4144554,472479156,-56225019564,
 6891580969416,-863170516419354,109910379090731076,
 -14178438902704308804,1848352853316179893176,
 -243058400211077655952644]