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A146078 as a simple table

na(n)
01
11
2-8
3-17
455
5208
6-287
7-2159
8424
919855
1016039
11-162656
12-307007
131156897
143919960
15-6492113
16-41771753
1716657264
18392603041
19242687665
20-3290739704
21-5474928689
2224141728647
2373416086848
24-143859470975
25-804604252607

[1,1,-8,-17,55,208,-287,-2159,424,19855,16039,
 -162656,-307007,1156897,3919960,-6492113,
 -41771753,16657264,392603041,242687665,
 -3290739704,-5474928689,24141728647,73416086848,
 -143859470975,-804604252607]