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A232599 as a simple table

na(n)
00
1-1
27
3-20
444
5-81
6135
7-208
8304
9-425
10575
11-756
12972
13-1225
141519
15-1856
162240
17-2673
183159
19-3700
204300
21-4961
225687
23-6480
247344
25-8281
269295
27-10388
2811564
29-12825
3014175
31-15616
3217152
33-18785
3420519

[0,-1,7,-20,44,-81,135,-208,304,-425,575,-756,972,
 -1225,1519,-1856,2240,-2673,3159,-3700,4300,-4961,
 5687,-6480,7344,-8281,9295,-10388,11564,-12825,
 14175,-15616,17152,-18785,20519]