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A143424

Triangle read by rows, A054525 * A130123, 1<=k<=n.

1, -1, 2, -1, 0, 4, 0, -2, 0, 8, -1, 0, 0, 0, 16, 1, -2, -4, 0, 0, 32, -1, 0, 0, 0, 0, 0, 64, 0, 0, 0, -8, 0, 0, 0, 128, 0, 0, -4, 0, 0, 0, 0, 0, 256, 1, -2, 0, 0, -16, 0, 0, 0, 0, 512, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1024, 0, 2, 0, -8, 0, -32, 0, 0, 0, 0, 0, 2048

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OFFSET

1,3

COMMENTS

Row sums = A000740 starting with offset 1: (1, 1, 3, 6, 15, 27, 63,...).

Left border = mu(n), A008683.

LINKS

Table of n, a(n) for n=1..78.

FORMULA

Mobius transform of A130123, where A130123 = an infinite lower triangular matrix with (1, 2, 4, 8,...) in the main diagonal and the rest zeros.

EXAMPLE

First few rows of the triangle =