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A302398 as a simple table

na(n)
01
1-1
2-2
33
4248
55655
662064
7-3516625
8-376936064
9-21890186577
10-495165203200
1196687112380639
1220607024735783936
132471270260977141767
14142697263160045590528
15-25986252776953159328625
16-11860424645318274482077696
17-2719428501410438623907546529
18-372732332273232481973818294272

[1,-1,-2,3,248,5655,62064,-3516625,-376936064,
 -21890186577,-495165203200,96687112380639,
 20607024735783936,2471270260977141767,
 142697263160045590528,-25986252776953159328625,
 -11860424645318274482077696,
 -2719428501410438623907546529,
 -372732332273232481973818294272]