%I #3 Mar 30 2012 16:50:48
%S 1,8,15,3,11,19,9,18,10,2,14,7,5,4,6,13,0,12,16,17
%N Write down numbers from 0 to 19 around a circle. Start at 1, jump 7; repeat; when you land on a number it is removed.
%D Clifford A. Pickover, A Passion for Mathematics, Wiley, 2005; see p. 63, 301.
%K nonn,fini,full
%O 0,2
%A _N. J. A. Sloane_, Apr 21 2008