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A371427 as a simple table

na(n)
01
12
25
314
441
5122
6363
71066
83046
98300
1020791
1143738
1251297
13-174406
14-1825027
15-10480330
16-50143510
17-218385772
18-895007802
19-3504952380
20-13214355159
21-48116028934
22-169216483595
23-573113441834
24-1856620607526
25-5675964306988
26-15927363432481

[1,2,5,14,41,122,363,1066,3046,8300,20791,43738,
 51297,-174406,-1825027,-10480330,-50143510,
 -218385772,-895007802,-3504952380,-13214355159,
 -48116028934,-169216483595,-573113441834,
 -1856620607526,-5675964306988,-15927363432481]