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A154341 as a simple table

na(n)
01
11
2-1
31
4-3
51
61
7-7
86
90
101
11-15
1225
130
14-6
151
16-31
1790
180
19-90
2030
211
22-63
23301
240
25-840
26630
27-90
281
29-127
30966
310
32-6300
337980
34-2520
350
361
37-255
383025
390
40-41706
4179380
42-41580
430
442520

[1,1,-1,1,-3,1,1,-7,6,0,1,-15,25,0,-6,1,-31,90,0,
 -90,30,1,-63,301,0,-840,630,-90,1,-127,966,0,
 -6300,7980,-2520,0,1,-255,3025,0,-41706,79380,
 -41580,0,2520]