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A109817 as a simple table

na(n)
01
1-42
2-11088
3-3774624
4-1472710974
5-617481728640
6-270883381218912
7-122585272771463040
8-56747118995519331456
9-26727350506044696990762
10-12760853360973370821796320
11-6159994719956314185540737376
12-3000691311646502407278581263104
13-1472883416501251994527873967792256

[1,-42,-11088,-3774624,-1472710974,-617481728640,
 -270883381218912,-122585272771463040,
 -56747118995519331456,-26727350506044696990762,
 -12760853360973370821796320,
 -6159994719956314185540737376,
 -3000691311646502407278581263104,
 -1472883416501251994527873967792256]