%I #3 Mar 30 2012 16:49:43
%S 1,-2,2,6,3,7,11,8,12,9,13,17,14,18,22,19,23,20,17,21,18,22,26,23,27,
%T 31,28,32,29,33,37,34,38,42,39,36,33,30,27,24,21,25,29,26,30,34,31,35,
%U 32,36,40,37,41,45,42,46,43,40,44,41,45,42,39,36,40,37,34,31
%N a(n) = A080901(n) - n.
%F Periodic with period 168.
%K sign
%O 1,2
%A _N. J. A. Sloane_, Apr 08 2003