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A113094 Diagonal of square table A113092; also, a(n) equals the n-th term in column 0 of the matrix (n+1)-th power of triangle A113095. 1

%I #3 Mar 30 2012 18:36:51

%S 1,2,27,1504,330745,289031301,1011348629263,14213347986246578,

%T 802722082112213275116,182118530044524172384716760,

%U 165892108866362877173717099499469

%N Diagonal of square table A113092; also, a(n) equals the n-th term in column 0 of the matrix (n+1)-th power of triangle A113095.

%o (PARI) {a(n,q=4)=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^q)[r-1,c-1])+(M^q)[r-1,c]))); return(if(n<1,0,(M^n)[n,1]))}

%Y Cf. A113092, A113095.

%K nonn

%O 1,2

%A _Paul D. Hanna_, Oct 14 2005

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Last modified April 24 13:38 EDT 2024. Contains 371957 sequences. (Running on oeis4.)