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A269440 as a simple table

na(n)
00
1-1
29
3-25
455
5-100
6166
7-254
8370
9-515
10695
11-911
121169
13-1470
141820
15-2220
162676
17-3189
183765
19-4405
205115
21-5896
226754
23-7690
248710
25-9815
2611011
27-12299
2813685
29-15170
3016760
31-18456
3220264
33-22185
3424225
35-26385
3628671
37-31084
3833630
39-36310
4039130

[0,-1,9,-25,55,-100,166,-254,370,-515,695,-911,
 1169,-1470,1820,-2220,2676,-3189,3765,-4405,5115,
 -5896,6754,-7690,8710,-9815,11011,-12299,13685,
 -15170,16760,-18456,20264,-22185,24225,-26385,
 28671,-31084,33630,-36310,39130]