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Search: id:A154392
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| A154392 |
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Number of zeros of sin(x^2) in integer intervals starting with (0,1). |
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+0
1
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| 0, 1, 1, 3, 2, 4, 4, 5, 5, 6, 7, 7, 8, 9, 9, 10, 10, 12, 11, 13
(list; graph; listen)
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OFFSET
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1,4
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COMMENT
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First differences of A032616. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 12 2009]
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EXAMPLE
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For n = 1, there are no zeros of sin(x^2) in (0,1), so a(1) = 0. For n = 2, there is one zero of sin(x^2) in (1,2) at x = sqrt(pi), or x ~ 1.772, so a(2) = 1.
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CROSSREFS
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Sequence in context: A134749 A061901 A078822 this_sequence A069745 A112199 A145815
Adjacent sequences: A154389 A154390 A154391 this_sequence A154393 A154394 A154395
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KEYWORD
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nonn
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AUTHOR
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Tim Royappa (royappa(AT)uwf.edu), Jan 08 2009
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