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A163581
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Number of zeros of sin(x) in integer intervals starting with (0,1).
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0
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0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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FORMULA
| a(n) = 1 if n < m*pi < (n+1) for any positive integer m; a(n) = 0 otherwise.
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EXAMPLE
| For n = 0, 1 and 2, sin(x) has no zeros in the intervals (0,1), (1,2) and (2,3), respectively, so a(0), a(1) and a(2) are all zero. For n = 3, sin(x) has a zero in the interval (3,4) at x = pi, so a(3) = 1.
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CROSSREFS
| Sequence in context: A144597 A125117 A144603 * A100283 A134391 A102215
Adjacent sequences: A163578 A163579 A163580 * A163582 A163583 A163584
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KEYWORD
| nonn
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AUTHOR
| Tim Royappa (royappa(AT)uwf.edu), Jul 31 2009
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