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A157691 as a simple table

na(n)
01
1-11
2-210
315191
4245910
5-15083651
6-718219530
7247295271487
83916095570870
9-433532699342501
10-34317632753335050
119287107000416477221
12441077236916505336630
13-70534251053030902677551
14-7816451672733198203250570
1511538069086051399501531337119

[1,-11,-210,15191,245910,-15083651,-718219530,
 247295271487,3916095570870,-433532699342501,
 -34317632753335050,9287107000416477221,
 441077236916505336630,-70534251053030902677551,
 -7816451672733198203250570,
 11538069086051399501531337119]