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A070314 as a simple table

na(n)
1-1
2-2
34
4-12
50
690
728
8404
9250
10329850
1139916118
122834088
1375021616
143790360374
1546271010
16993974
17956666
18123610842
191713311273189068
20117876621366
212703875810364
2293799610095767534
23148139754734068388
24765041185860961083618
2538681321803817920155550

[-1,-2,4,-12,0,90,28,404,250,329850,39916118,
 2834088,75021616,3790360374,46271010,993974,
 956666,123610842,1713311273189068,117876621366,
 2703875810364,93799610095767534,
 148139754734068388,765041185860961083618,
 38681321803817920155550]