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A024264 as a simple table

na(n)
00
11
2-4
3136
4-6784
5524416
6-64036864
710501374976
8-2283962220544
9634741960278016
10-218778649767706624
1191736006502034702336
12-45959204407743090786304
1327112425203442398670094336
14-18603328214677391682184413184
1514689562944237012958430694998016

[0,1,-4,136,-6784,524416,-64036864,10501374976,
 -2283962220544,634741960278016,
 -218778649767706624,91736006502034702336,
 -45959204407743090786304,
 27112425203442398670094336,
 -18603328214677391682184413184,
 14689562944237012958430694998016]