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a(n) = A080901(n) - n.
1

%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