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A159197 as a simple table

na(n)
01
14
2-146
3-1880
463436
51471984
6-45495224
7-1612749344
845140586640
92270685496384
10-56732233335584
11-3905439437484416
1285475082054073024
137934074594685996800
14-148274224427133801344
15-18587578078456375947776
16285956053044109633474816

[1,4,-146,-1880,63436,1471984,-45495224,
 -1612749344,45140586640,2270685496384,
 -56732233335584,-3905439437484416,
 85475082054073024,7934074594685996800,
 -148274224427133801344,-18587578078456375947776,
 285956053044109633474816]