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A145976 as a simple table

na(n)
01
11
2-6
3-13
429
5120
6-83
7-923
8-342
96119
108513
11-34320
12-93911
13146329
14803706
15-220597
16-5846539
17-4302360
1836623413
1966739933
20-189623958
21-656803489
22670564217
235268188640
24574239121
25-36303081359
26-40322755206
27213798814307

[1,1,-6,-13,29,120,-83,-923,-342,6119,8513,-34320,
 -93911,146329,803706,-220597,-5846539,-4302360,
 36623413,66739933,-189623958,-656803489,670564217,
 5268188640,574239121,-36303081359,-40322755206,
 213798814307]