A134540 A054525 * A000012.

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

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