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Search: id:A113087
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%I A113087
%S A113087 1,2,8,68,1252,51724,5000468,1176844012,696653833108,1063944196415276,
%T A113087 4273738134967763028,45828521528368595280876,
%U A113087 1327368163105850592309345044,104832927462400739554960944906668
%N A113087 Row sums of triangle A113084, which satisfies the recurrence: A113084(n,
               k) = [A113084^3](n-1,k-1) + [A113084^3](n-1,k).
%o A113087 (PARI) {a(n)=local(M=matrix(n+1,n+1));for(r=1,n+1, for(c=1,r, M[r,c]=if(r==c,
               1,if(c>1,(M^3)[r-1,c-1])+(M^3)[r-1,c]))); return(sum(k=1,n+1,M[n+1,
               k]))}
%Y A113087 Cf. A113084.
%Y A113087 Sequence in context: A156448 A157752 A055547 this_sequence A099729 A123117 
               A062733
%Y A113087 Adjacent sequences: A113084 A113085 A113086 this_sequence A113088 A113089 
               A113090
%K A113087 nonn
%O A113087 0,2
%A A113087 Paul D. Hanna (pauldhanna(AT)juno.com), Oct 14 2005

    
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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.


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