%I A134967
%S A134967 1,2,1,2,3,4,3,4,5,6,5,6,7,8,7,8,9,10,9,10,11,12,11,12,13,14,13,14,15,
%T A134967 16,15,16,17,18,17,18,19,20,19,20,21,22,21,22,23,24,23,24,25,26,25,26,
               27,
%U A134967 28,27,28,29,30,29,30,31,32,31,32,33,34,33,34,35,36,35,36,37,38,37,38,
               39
%V A134967 -1,2,-1,2,-3,4,-3,4,-5,6,-5,6,-7,8,-7,8,-9,10,-9,10,-11,12,-11,12,-13,
               14,-13,14,-15,
%W A134967 16,-15,16,-17,18,-17,18,-19,20,-19,20,-21,22,-21,22,-23,24,-23,24,-25,
               26,-25,26,-27,
%X A134967 28,-27,28,-29,30,-29,30,-31,32,-31,32,-33,34,-33,34,-35,36,-35,36,-37,
               38,-37,38,-39
%N A134967 List of quadruples: -2n-1, 2n+2, -2n-1, 2n+2.
%C A134967 First differences are 3, -3, 3, -5, 7, -7, 7, -9, 11, -11, 11, .. .
%Y A134967 Sequence in context: A030330 A059261 A162330 this_sequence A084612 A030339 
               A030383
%Y A134967 Adjacent sequences: A134964 A134965 A134966 this_sequence A134968 A134969 
               A134970
%K A134967 sign
%O A134967 0,2
%A A134967 Paul Curtz (bpcrtz(AT)free.fr), Feb 04 2008