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A270625 as a simple table

na(n)
04
14
232
3-20
472
5-52
6148
7-144
8276
9-232
10356
11-336
12508
13-436
14616
15-632
16900
17-844
181088
19-1088
201412
21-1328
221604
23-1600
241996
25-1876
262168
27-2032
282376
29-2252
302668
31-2680
323188
33-3136
343624
35-3544
364000
37-3884
384352
39-4244
404864
41-4712
425224
43-5132

[4,4,32,-20,72,-52,148,-144,276,-232,356,-336,508,
 -436,616,-632,900,-844,1088,-1088,1412,-1328,1604,
 -1600,1996,-1876,2168,-2032,2376,-2252,2668,-2680,
 3188,-3136,3624,-3544,4000,-3884,4352,-4244,4864,
 -4712,5224,-5132]