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A123220 as a simple table

na(n)
11
23
35
4-9
5-99
6-297
7389
88655
946573
10122823
11-120491
12-3003393
13-15885315
14-40246281
1550400229
161040606127
175296630541
1812512952615
19-22872751243
20-368600380833
21-1789336379619
22-3926384911017
239502037022725
24129579396089871
25602116408170541
261219711972804743

[1,3,5,-9,-99,-297,389,8655,46573,122823,-120491,
 -3003393,-15885315,-40246281,50400229,1040606127,
 5296630541,12512952615,-22872751243,-368600380833,
 -1789336379619,-3926384911017,9502037022725,
 129579396089871,602116408170541,1219711972804743]