0,2
A113345 is the matrix square of A113340.
(PARI) {a(n)=local(A, B); A=matrix(1, 1); A[1, 1]=1; for(m=2, n+4, B=matrix(m, m); for(i=1, m, for(j=1, i, if(i<3|j==i|j>m-1, B[i, j]=1, if(j==1, B[i, 1]=1, B[i, j]=(A^(2*j-1))[i-j+1, 1])); )); A=B); (A^2)[n+4, 4]}
Cf. A113340, A113345, A113346 (column 0), A113347 (column 1), A113348 (column 2); A113350.
Sequence in context: A051817 A199707 A068769 * A109764 A002961 A063071
Adjacent sequences: A113346 A113347 A113348 * A113350 A113351 A113352
nonn
Paul D. Hanna (pauldhanna(AT)juno.com), Nov 08 2005
