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A134746 as a simple table

na(n)
01
14
20
3-16
40
556
60
7-160
80
9404
100
11-944
120
132072
140
15-4320
160
178648
180
19-16720
200
2131360
220
23-57312
240
25102364
260
27-179104
280
29307672
300
31-519808
320
33864960
340
35-1419456
360
372299832
380
39-3682400
400
415831784
420
43-9141808
440
4514194200
460
47-21842368
480

[1,4,0,-16,0,56,0,-160,0,404,0,-944,0,2072,0,
 -4320,0,8648,0,-16720,0,31360,0,-57312,0,102364,0,
 -179104,0,307672,0,-519808,0,864960,0,-1419456,0,
 2299832,0,-3682400,0,5831784,0,-9141808,0,
 14194200,0,-21842368,0]