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A109747 as a simple table

na(n)
01
12
23
33
42
53
65
7-4
85
955
10-212
11201
122381
13-15350
1435183
15145359
16-1821438
178117231
18-521487
19-278996548
202261959961
21-7554900397
22-34727188796
23690775844605
24-4901767330647
2510921820177234
26179314430713387
27-2668801066419061
2818150518618843778

[1,2,3,3,2,3,5,-4,5,55,-212,201,2381,-15350,35183,
 145359,-1821438,8117231,-521487,-278996548,
 2261959961,-7554900397,-34727188796,690775844605,
 -4901767330647,10921820177234,179314430713387,
 -2668801066419061,18150518618843778]