%I A000134 M1570 N0613
%S A000134 2,6,9,12,15,18,21,24,27,31,34,37,40,43,46,49,53,56,59,62,65,68,71,75,
%T A000134 78,81,84,87,90,93,97,100,103,106,109,112,115,119,122,125,128,131,134,
%U A000134 137,141,144,147,150,153,156,159,163,166,169,172,175,178,181,185,188
%N A000134 Positive zeros of Bessel function of order 0 rounded to nearest integer.
%D A000134 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000134 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000134 M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, 
               National Bureau of Standards Applied Math. Series 55, 1964 (and various 
               reprintings), p. 409.
%D A000134 British Association Mathematical Tables, Vol. 6, Bessel Functions, Part 
               1, Functions of Order Zero and Unity. Cambridge Univ. Press, 1937, 
               p. 171.
%H A000134 David W. Wilson, <a href="b000134.txt">Table of n, a(n) for n=1..1000</
               a>
%H A000134 M. Abramowitz and I. A. Stegun, eds., <a href="http://www.nrbook.com/
               abramowitz_and_stegun/">Handbook of Mathematical Functions</a>, National 
               Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 
               [alternative scanned copy].
%H A000134 <a href="Sindx_Be.html#Bessel">Index entries for sequences related to 
               Bessel functions or polynomials</a>
%o A000134 (PARI) a(n)=if(n<1,0,n=a(n-1); until(besselj(0,n-1/2)*besselj(0,n+1/2)<0,
               n++); n)
%Y A000134 Sequence in context: A032713 A086939 A119720 this_sequence A120701 A112870 
               A086562
%Y A000134 Adjacent sequences: A000131 A000132 A000133 this_sequence A000135 A000136 
               A000137
%K A000134 nonn
%O A000134 1,1
%A A000134 N. J. A. Sloane (njas(AT)research.att.com).