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A106398 as a simple table

na(n)
11
2-1
3-6
4-19
5-39
6-66
7-98
8-129
9-172
10-330
11-908
12-2502
13-5955
14-12107

[1,-1,-6,-19,-39,-66,-98,-129,-172,-330,-908,
 -2502,-5955,-12107]