A128258 Moebius transform of A128229.

1, 0, 1, -1, 2, 1, -1, -1, 3, 1, -1, 0, 0, 4, 1, 0, -3, -1, 0, 5, 1, -1, 0, 0, 0, 0, 6, 1, 0, 0, -3, -1, 0, 0, 7, 1, 0, -2, -1, 0, 0, 0, 0, 8, 1, 0, -1, 0, -4, -1, 0, 0, 0, 9, 1

Offset

1,5

Comments

Row sums = phi(n), A000010: (1, 1, 2, 2, 4, 2, 6,...). A128259 = inverse Moebius transform of A128229.

Links

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

Formula

A054525 * A128229

Example

First few rows of the triangle are:
1;
0, 1;
-1, 2, 1;
-1, -1, 3, 1;
-1, 0, 0, 4, 1;
0, -3, -1, 0, 5, 1;
...

Crossrefs

Cf. A128259, A128229, A054525, A000010.

Sequence in context: A212219 A073266 A125692 * A104967 A098495 A175432

Adjacent sequences: A128255 A128256 A128257 * A128259 A128260 A128261

Keyword

tabl,sign

Author

Gary W. Adamson, Feb 21 2007

Status

approved