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A113289 as a simple table

na(n)
01
1-1
24
3-15
436
5-119
6302
7-911
82440
9-7199
1020186
11-60359
12177204
13-546615
141683286
15-5401759
1617456128
17-58447151
18197925490
19-691264279
202446636396
21-8897012871
2232811147054
23-123933345455
24474792813176
25-1858243857599
267375013350282
27-29840434526951

[1,-1,4,-15,36,-119,302,-911,2440,-7199,20186,
 -60359,177204,-546615,1683286,-5401759,17456128,
 -58447151,197925490,-691264279,2446636396,
 -8897012871,32811147054,-123933345455,
 474792813176,-1858243857599,7375013350282,
 -29840434526951]