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A270692 as a simple table

na(n)
04
10
228
3-20
480
5-68
6136
7-108
8232
9-220
10352
11-324
12496
13-480
14620
15-568
16868
17-912
181188
19-1236
201612
21-1520
221672
23-1528
241848
25-1836
262136
27-2060
282492
29-2496
302748
31-2624
323184
33-3296
343928
35-3972
364460
37-4280
384716
39-4672
405252
41-5136
425680
43-5684

[4,0,28,-20,80,-68,136,-108,232,-220,352,-324,496,
 -480,620,-568,868,-912,1188,-1236,1612,-1520,1672,
 -1528,1848,-1836,2136,-2060,2492,-2496,2748,-2624,
 3184,-3296,3928,-3972,4460,-4280,4716,-4672,5252,
 -5136,5680,-5684]