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A048607 as a simple table

na(n)
01
1-1
25
3-5
4109
5-497
6127
7-11569
8312757
9-1219255
10165677473
11-885730939
1220163875141
13-252312616027
149565074633871
15-691138954263097
165061676927076641
17-95993669516238563
181245671625068799013

[1,-1,5,-5,109,-497,127,-11569,312757,-1219255,
 165677473,-885730939,20163875141,-252312616027,
 9565074633871,-691138954263097,5061676927076641,
 -95993669516238563,1245671625068799013]