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A107068 as a simple table

na(n)
01
1-3
26
3-10
416
5-27
649
7-92
8172
9-316
10573
11-1035
121874
13-3406
146204
15-11303
1620577
17-37432
1868072
19-123800
20225193
21-409683
22745342
23-1355970
242466760
25-4487395
268163217
27-14850196
2827015092
29-49145300
3089404037
31-162641499
32295872778
33-538243174
34979156724
35-1781254927
363240410561

[1,-3,6,-10,16,-27,49,-92,172,-316,573,-1035,1874,
 -3406,6204,-11303,20577,-37432,68072,-123800,
 225193,-409683,745342,-1355970,2466760,-4487395,
 8163217,-14850196,27015092,-49145300,89404037,
 -162641499,295872778,-538243174,979156724,
 -1781254927,3240410561]