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A296353 as a simple table

na(n)
180
2-1215
3142805
4-7004233215
5870763219280
687789257318405
745421053339522658203125
8-7059547871395329316834815
9-19913109703689000789427796194815
1042950557989828549673287680
11940419421873808776346210289268985127605

[80,-1215,142805,-7004233215,870763219280,
 87789257318405,45421053339522658203125,
 -7059547871395329316834815,
 -19913109703689000789427796194815,
 42950557989828549673287680,
 940419421873808776346210289268985127605]