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Search: id:A006547
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%I A006547
%S A006547 0,2,20,894,76936,11218330,2486192988,779417002070,328459055125136,
%T A006547 179127562413460914,122758432482044667940,103274000340320165525422,
%U A006547 104642430930574639703548440,125699390463431456337149276234
%V A006547 0,2,-20,894,-76936,11218330,-2486192988,779417002070,-328459055125136,
%W A006547 179127562413460914,-122758432482044667940,103274000340320165525422,
%X A006547 -104642430930574639703548440,125699390463431456337149276234
%N A006547 Sum ((-1)^(i+1)*binomial(n,i)*2^i*(2*i-1)!,i=1..n).
%Y A006547 Sequence in context: A158268 A163594 A013148 this_sequence A135757 A158843 
               A008793
%Y A006547 Adjacent sequences: A006544 A006545 A006546 this_sequence A006548 A006549 
               A006550
%K A006547 sign
%O A006547 0,2
%A A006547 N. J. A. Sloane (njas(AT)research.att.com).

    
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Last modified December 16 13:01 EST 2009. Contains 170825 sequences.


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