Search: id:A134409
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%I A134409
%S A134409 0,1,1,0,2,0,3,3,0,5,5,0,8,0,11,11,0,16,0,21,21,0,29,29,0,40,0,51,51,0,
%T A134409 67,67,0,88,0,109,109,0,138,0,167,167,0,207,207,0,258,0,309,309,0,376,
               0,
%U A134409 443,443,0,531,531,0,640,0,749,749,0,887,887,0,1054,0,1221,1221,0,1428
%N A134409 Second differences of A006336.
%C A134409 a(n) = A006336(n+2)-2*A006336(n+1)-A006336(n) = A134408(n+1)-A134408(n);
%C A134409 apart from 0 same range as A006336;
%C A134409 A001950(n) = Min(m: a(m) = A006336(n)).
%Y A134409 Sequence in context: A053727 A127952 A154344 this_sequence A094067 A094112 
               A105569
%Y A134409 Adjacent sequences: A134406 A134407 A134408 this_sequence A134410 A134411 
               A134412
%K A134409 nonn
%O A134409 1,5
%A A134409 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 24 2007

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