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%I #2 Mar 30 2012 17:34:03
%S 2,-1,4,-1,2,-3,7,-1,2,-3,4,-5,10,-1,2,-3,4,-5,6,-7,13,-1,2,-3,4,-5,6,
%T -7,8,-9,16,-1,2,-3,4,-5,6,-7,8,-9,10,-11,19,-1,2,-3,4,-5,6,-7,8,-9,
%U 10,-11,12,-13,22,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,14,-15,25,-1,2,-3,4
%N Triangle read by rows in which row n lists A033627(n) together with the first 2n-1 numbers <> 0 of A038608.
%C Absolute values give A171173.
%C Note that the partial sums of this sequence gives A171175, a permutation of the natural numbers.
%e Triangle begins:
%e 2, -1,
%e 4, -1,2,-3,
%e 7, -1,2,-3,4,-5,
%e 10,-1,2,-3,4,-5,6,-7,
%e 13,-1,2,-3,4,-5,6,-7,8,-9,
%e 16,-1,2,-3,4,-5,6,-7,8,-9,10,-11,
%e 19,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,
%e 22,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,14,-15,
%e 25,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,14,-15,16,-17,
%Y Cf. A033627, A038608, A172310, A171164, A161165, A161166, A171172, A171173, A171175, A171176, A171177, A171178.
%K easy,sign,tabf
%O 1,1
%A _Omar E. Pol_, Feb 23 2010
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