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A134540 A054525 * A000012. 3
1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, -1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, -1, 0, 0, 0, 1, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row sums = phi(n), A000010: (1, 1, 2, 2, 4, 2, 6, 4, 6, 4, ...).

LINKS

Table of n, a(n) for n=1..55.

FORMULA

A054525 * A000012 as infinite lower triangular matrices.

Triangle read by rows, partial sums of A054525 (the Mobius transform) terms starting from the right.

EXAMPLE

First few rows of the triangle:

1;

0, 1;

0, 1, 1;

0, 0, 1, 1;

0, 1, 1, 1, 1;

0, -1, 0, 1, 1, 1;

0, 1, 1, 1, 1, 1, 1;

0, 0, 0, 0, 1, 1, 1, 1;

0, 0, 0, 1, 1, 1, 1, 1, 1;

0, -1, 0, 0, 0, 1, 1, 1, 1, 1;

...

CROSSREFS

Cf. A054525.

Sequence in context: A101688 A155029 A155031 * A318962 A128430 A176330

Adjacent sequences: A134537 A134538 A134539 * A134541 A134542 A134543

KEYWORD

tabl,sign,more

AUTHOR

Gary W. Adamson, Oct 31 2007

STATUS

approved

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Last modified January 28 17:08 EST 2023. Contains 359895 sequences. (Running on oeis4.)