A383010

a(n) = -Sum_{d|n} (-n)^d.

1, -2, 30, -268, 3130, -46470, 823550, -16781368, 387421227, -9999900090, 285311670622, -8916103453380, 302875106592266, -11112006720144694, 437893890381622140, -18446744078004584688, 827240261886336764194, -39346408075098212291754, 1978419655660313589123998

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