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A110683 as a simple table

na(n)
01
1-7
221
3-79
4279
5-997
63561
7-12781
845951
9-165355
10595143
11-2142025
127709073
13-27743437
1499840687
15-359294443
161292981391
17-4653011185
1816744655841
19-60258539413
20216850840215
21-780375582475
222808317778903
23-10106221816681
2436369003278769

[1,-7,21,-79,279,-997,3561,-12781,45951,-165355,
 595143,-2142025,7709073,-27743437,99840687,
 -359294443,1292981391,-4653011185,16744655841,
 -60258539413,216850840215,-780375582475,
 2808317778903,-10106221816681,36369003278769]