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A375373 as a simple table

na(n)
01
1-2
24
3-4
46
5-4
69
7-4
816
90
1028
1116
1257
1358
14132
15172
16322
17476
18817
191272
202112
213360
225496
238832
2414353
2523158
2637540
2760668
2898238
29158876
30257145
31415988
32673168
331089120
341762324
352851408
364613769
377465138
3812078948
3919544044
4031623034
4151167036

[1,-2,4,-4,6,-4,9,-4,16,0,28,16,57,58,132,172,322,
 476,817,1272,2112,3360,5496,8832,14353,23158,
 37540,60668,98238,158876,257145,415988,673168,
 1089120,1762324,2851408,4613769,7465138,12078948,
 19544044,31623034,51167036]