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 A154392 Number of zeros of sin(x^2) in integer intervals starting with (0,1). 0
 0, 1, 1, 3, 2, 4, 4, 5, 5, 6, 7, 7, 8, 9, 9, 10, 10, 12, 11, 13 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS First differences of A032616. [From R. J. Mathar, Jan 12 2009] LINKS EXAMPLE 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. MATHEMATICA Join[{0}, Table[CountRoots[Sin[x^2], {x, k, k+1}], {k, 20}]] (* Harvey P. Dale, Dec 24 2018 *) CROSSREFS Sequence in context: A326015 A078822 A224980 * A069745 A112199 A145815 Adjacent sequences:  A154389 A154390 A154391 * A154393 A154394 A154395 KEYWORD nonn AUTHOR A. Timothy Royappa, Jan 08 2009 STATUS approved

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Last modified June 21 02:28 EDT 2021. Contains 345342 sequences. (Running on oeis4.)