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A375501 as a simple table

na(n)
01
10
29
3-16
465
5-160
6465
7-1216
83273
9-8608
1022721
11-59648
12156577
13-410432
141075529
15-2817200
167378049
17-19319840
1850586481
19-132447360
20346768521
21-907878720
222376901249
23-6222878976
2416291823425
25-42652732800
26111666604425
27-292347451216
28765376349633
29-2003782568608

[1,0,9,-16,65,-160,465,-1216,3273,-8608,22721,
 -59648,156577,-410432,1075529,-2817200,7378049,
 -19319840,50586481,-132447360,346768521,
 -907878720,2376901249,-6222878976,16291823425,
 -42652732800,111666604425,-292347451216,
 765376349633,-2003782568608]