A063699 - OEIS

A063699

Positions of negative coefficients in cyclotomic polynomial Phi_n(x), A063698 in binary.

0, 1, 0, 0, 0, 0, 10, 0, 0, 0, 1010, 0, 100, 0, 101010, 10010010, 0, 0, 1000, 0, 1000100, 100100010010, 1010101010, 0, 10000, 0, 101010101010, 0, 10001000100, 0, 111000, 0, 0, 10010010010010010010, 1010101010101010, 100001010010100101000010

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OFFSET

0,7

LINKS

Table of n, a(n) for n=0..35.

Index entries for cyclotomic polynomials, positions of coefficients

EXAMPLE

E.g. Phi_15(x) = x^8 - x^7 + x^5 - x^4 + x^3 - x + 1, thus the 1-bits of a(15) are at positions 1,4 and 7, thus we get a(15) = 10010010

MAPLE

map(convert, A063698, binary);

CROSSREFS

Cf. A063697, A063671, A063672.

Sequence in context: A247118 A010894 A002045 * A287464 A288012 A349626

Adjacent sequences: A063696 A063697 A063698 * A063700 A063701 A063702

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Aug 03 2001

STATUS

approved