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Search: id:A063697
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| A063697 |
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Positions of positive coefficients in cyclotomic polynomial Phi_n(x), A063696 in binary. |
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+0
6
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| 10, 10, 11, 111, 101, 11111, 101, 1111111, 10001, 1001001, 10101, 11111111111, 10001, 1111111111111, 1010101, 100101001, 100000001, 11111111111111111, 1000001, 1111111111111111111, 100010001, 1001001001001, 10101010101
(list; graph; listen)
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OFFSET
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0,1
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LINKS
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Index entries for cyclotomic polynomials, positions of coefficients
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EXAMPLE
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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 0,3,5 and 8, thus we get a(15) = 100101001
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MAPLE
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map(convert, A063696, binary);
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CROSSREFS
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Cf. A063699, A063671, A063672.
Adjacent sequences: A063694 A063695 A063696 this_sequence A063698 A063699 A063700
Sequence in context: A003855 A004209 A112867 this_sequence A111381 A063660 A047879
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KEYWORD
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nonn
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AUTHOR
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Antti Karttunen Aug 03 2001
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