A106479 First column in inverse of Euler phi sequence matrix.

1, -1, -1, 1, -1, 3, -3, -1, 7, -9, 5, -1, -7, 25, -27, -3, 29, -41, 55, -25, -73, 161, -143, -11, 217, -387, 447, -99, -737, 1377, -1219, 209, 1761, -3999, 4357, -1087, -5311, 11463, -12475, 4723, 12705, -33133, 38839, -15005, -35001, 90485, -112395, 54269, 92435, -262555, 328759, -165839, -244533

Offset

0,6

Links

Seiichi Manyama, Table of n, a(n) for n = 0..8642

Formula

G.f.: 1/Sum_{k>=0} phi(k+1)*x^k.

Crossrefs

Cf. A000010.

Sequence in context: A180735 A344726 A116401 * A114422 A127501 A181304

Adjacent sequences: A106476 A106477 A106478 * A106480 A106481 A106482

Keyword

easy,sign

Author

Paul Barry, May 03 2005

Status

approved