%I #11 May 28 2024 08:15:41
%S 1,2,1,3,2,4,1,3,5,2,4,1,6,3,5,2,7,4,1,6,3,8,5,2,7,4,1,9,6,3,8,5,2,10,
%T 7,4,1,9,6,3,11,8,5,2,10,7,4,1,12,9,6,3,11,8,5,2,13,10,7,4,1,12,9,6,3,
%U 14,11,8,5,2,13,10,7,4,15,1,12,9,6,3,14,11,8,5,16,2,13,10,7,4,15,1,12,9,6,17,3,14,11,8,5
%N Signature sequence of Pi/2.
%C Signature sequence of x = A019669: defined by sorting the values of i+j*x, i,j>=1, and collecting the list of the i in that order.
%C Starts similar to A191475, because Pi/2 = 1.5708... is close to log_2(3) = 1.5849.....
%H <a href="/index/Si#signature_sequences">Index entries for sequences related to signature sequences</a>
%Y Cf. A019669.
%K nonn
%O 1,2
%A _R. J. Mathar_, May 28 2024