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A237652 as a simple table

na(n)
01
11
2-3
320
4-245
54290
6-114422
74086800
8-203647509
912920587070
10-1053926397590
11105178069321944
12-12765014959365682
131838898931467398164
14-311221726754896488780
1561047560951879121055296
16-13747598006865584455353165
173521759025274977423306328182
18-1018406456608128511401443183654

[1,1,-3,20,-245,4290,-114422,4086800,-203647509,
 12920587070,-1053926397590,105178069321944,
 -12765014959365682,1838898931467398164,
 -311221726754896488780,61047560951879121055296,
 -13747598006865584455353165,
 3521759025274977423306328182,
 -1018406456608128511401443183654]