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A308849 as a simple table

na(n)
01
1-1
20
33
4-6
5-10
6100
7-175
8-1470
911214
10-4032
11-447678
122813580
138767044
14-254393568
151156311585
1614213048850
17-237139066450
18423094740640
1926925567437054
20-323136231452892
21-998293111680228
2267449022208054760
23-562713810943757746
24-7585754355598687268
25220643947556639812100

[1,-1,0,3,-6,-10,100,-175,-1470,11214,-4032,
 -447678,2813580,8767044,-254393568,1156311585,
 14213048850,-237139066450,423094740640,
 26925567437054,-323136231452892,-998293111680228,
 67449022208054760,-562713810943757746,
 -7585754355598687268,220643947556639812100]