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A321222 as a simple table

na(n)
11
2-3
3-26
4-15
5-3124
645864
7-823542
8-255
9-19682
109990233352
11-285311670610
122176246800
13-302875106592252
1411111328602468784
15437893859848932344
16-65535
17-827240261886336764176
18101559568985784
19-1978419655660313589123978
2099999904632567310800

[1,-3,-26,-15,-3124,45864,-823542,-255,-19682,
 9990233352,-285311670610,2176246800,
 -302875106592252,11111328602468784,
 437893859848932344,-65535,-827240261886336764176,
 101559568985784,-1978419655660313589123978,
 99999904632567310800]