A063697 Positions of positive coefficients in cyclotomic polynomial Phi_n(x), A063696 in binary.

0, 10, 11, 111, 101, 11111, 101, 1111111, 10001, 1001001, 10101, 11111111111, 10001, 1111111111111, 1010101, 100101001, 100000001, 11111111111111111, 1000001, 1111111111111111111, 100010001, 1001001001001, 10101010101

Offset: 0

Author

Antti Karttunen, Aug 03 2001

Keywords

• nonn
• base

Examples

			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 0,3,5 and 8, thus we get a(15) = 100101001
		

Links

• Index entries for cyclotomic polynomials, positions of coefficients

Crossrefs

Cf. A063699, A063671, A063672.

Programs

Maple

map(convert, A063696,binary);

Extensions

a(0) corrected by Sean A. Irvine, May 08 2023