%I A033474
%S A033474 1,1,7,31,127,2555,1414477,57337,118518239,5749691557,91546277357
%V A033474 1,-1,7,-31,127,-2555,1414477,-57337,118518239,-5749691557,91546277357
%N A033474 Duplicate of A001896.
%Y A033474 Sequence in context: A002147 A083420 A036282 this_sequence A001896 A044049 
               A005825
%Y A033474 Adjacent sequences: A033471 A033472 A033473 this_sequence A033475 A033476 
               A033477
%K A033474 dead
%O A033474 0,3