false hits from signs?

[Marc LeBrun]

I thought I'd hit a miracle when I looked up

            1 0 -1 0 -1 0 1 0 0 0 -1 0 -1 0 1 0 1 0 -1 0 -1 0 1 0 0 0 0 0 
-1 0 1 0 1 0 -1 0 -1 0...

and the OEIS served back

%S A087003 
1,0,1,0,1,0,1,0,0,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,0,0,0,1,0,1,0,1,0,1,...
%V A087003 
1,0,-1,0,-1,0,-1,0,0,0,-1,0,-1,0,1,0,-1,0,-1,0,1,0,-1,0,0,0,0,0,-1,0,-1,0,1,0,1,0,-1,... 

%N A087003 Sum of Moebius-funtion values computed for terms of 3x+1 
trajectory started at n.

until I looked more closely and saw the discrepancies between query and 
resulting sequence and gave it some more thought.

I understand this is related to how the OEIS looks up signed sequences and 
can happily live with that.  However I'm wondering if there maybe should be 
some kind of warning or explanation about this so it doesn't send the 
unsuspecting off chasing wild geese?

(By the way, the %N A087003 line should have "function" for "funtion")

Thanks!