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A161405 as a simple table

na(n)
14
21000000000000
30
42
50
6-1
7-1
88
95
10-1
11-1
121000
131000
141
15-1
160
171000000000000000000000000000000000000000000
1815
190
202
213
221
239
24-1
251000000000000000000000000000000000000
2631
2710

[4,1000000000000,0,2,0,-1,-1,8,5,-1,-1,1000,1000,
 1,-1,0,
 1000000000000000000000000000000000000000000,15,0,
 2,3,1,9,-1,1000000000000000000000000000000000000,
 31,10]