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A022687 as a simple table

na(n)
01
1-27
2297
3-1548
42079
518036
6-88893
742471
8632259
9-1042392
10-2491695
113171771
1219897479
13-6178491
14-149788494
1540753548
16598051971
17397032246
18-1758684468
19-5331986973
204009289778
2122014953235

[1,-27,297,-1548,2079,18036,-88893,42471,632259,
 -1042392,-2491695,3171771,19897479,-6178491,
 -149788494,40753548,598051971,397032246,
 -1758684468,-5331986973,4009289778,22014953235]