Search: id:A112916
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%I A112916
%S A112916 1,2,7,34,207,1496,12420,115938,1198831,13582010,167187547,2221174504,
%T A112916 31675372612,482628099144,7825665501852,134562607924194,
%U A112916 2446051941152127,46873289933397206,944492559814284397
%N A112916 Self-convolution of A088716, where a(n) = 2*A088716(n+1)/(n+2) for n>
               =0.
%o A112916 (PARI) {a(n)=local(A=Mat(1),B);for(m=2,n+1,B=matrix(m,m);for(i=1,m, for(j=1,
               i, if(j==i,B[i,j]=1,B[i,j]=-j*(A^-1)[i-j,1]);));A=B); return(Vec(Ser(vector(n+1,
               i,(A^-1)[i,1]))^2)[n+1])}
%Y A112916 Cf. A088716, A112915, A112911.
%Y A112916 Sequence in context: A056543 A075834 A011800 this_sequence A145845 A002720 
               A111539
%Y A112916 Adjacent sequences: A112913 A112914 A112915 this_sequence A112917 A112918 
               A112919
%K A112916 nonn
%O A112916 0,2
%A A112916 Paul D. Hanna (pauldhanna(AT)juno.com), Oct 06 2005

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