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A370955 as a simple table

na(n)
01
1-1
2-4
3-29
4-265
5-2745
6-30773
7-364315
8-4488749
9-57020414
10-741999700
11-9845906898
12-132774990781
13-1814964497342
14-25098172218816
15-350548840292011
16-4938909144117611
17-70118741489312657
18-1002259422501603334
19-14412940220878338617
20-208393139882994584383

[1,-1,-4,-29,-265,-2745,-30773,-364315,-4488749,
 -57020414,-741999700,-9845906898,-132774990781,
 -1814964497342,-25098172218816,-350548840292011,
 -4938909144117611,-70118741489312657,
 -1002259422501603334,-14412940220878338617,
 -208393139882994584383]