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A233904 as a simple table

na(n)
00
10
2-1
31
4-3
51
6-2
74
8-7
91
10-4
116
12-8
134
14-3
1511
16-15
171
18-8
1910
20-14
216
22-5
2317
24-20
254
26-9
2717
28-17
2911
30-4
3126
32-31
331
34-16
3518
36-26
3710
38-9
3929
40-34
416
42-15
4327
44-27
4517
46-6
4740
48-44
494

[0,0,-1,1,-3,1,-2,4,-7,1,-4,6,-8,4,-3,11,-15,1,-8,
 10,-14,6,-5,17,-20,4,-9,17,-17,11,-4,26,-31,1,-16,
 18,-26,10,-9,29,-34,6,-15,27,-27,17,-6,40,-44,4]