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A375902 as a simple table

na(n)
01
1-2
24
3-2
4-52
5358
612
7-25986
8247228
9821398
10-52933300
11534428926
126201248220
13-271179578490
142375560802188
1575726973445374
16-2740636867741828
1714280527041851958
181501820173046702796
19-46939564687781824002
20-67963035486950641508

[1,-2,4,-2,-52,358,12,-25986,247228,821398,
 -52933300,534428926,6201248220,-271179578490,
 2375560802188,75726973445374,-2740636867741828,
 14280527041851958,1501820173046702796,
 -46939564687781824002,-67963035486950641508]