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A373388 as a simple table

na(n)
01
1-1
21
30
4-1
50
65
70
8-45
90
10665
110
12-14457
130
14433741
150
16-17160421
170
18865407905
190
20-54179057649
210
224122477869077
230
24-374673778941981
250
2640087507726395689
270
28-4987405802167886825
290
30713925031978621041757
310
32-116506260029721326349781
330
3421501227314690679723073329

[1,-1,1,0,-1,0,5,0,-45,0,665,0,-14457,0,433741,0,
 -17160421,0,865407905,0,-54179057649,0,
 4122477869077,0,-374673778941981,0,
 40087507726395689,0,-4987405802167886825,0,
 713925031978621041757,0,-116506260029721326349781,
 0,21501227314690679723073329]