293526domain: NAppears in sequencesSum along upward diagonal of Pascal triangle to center.at n=27A010752a(n) = T(n,m) + T(n,m+1) + ... + T(n,n), where m=[ (n+1)/2 ], T given by A026725.at n=18A026847T(n,n-4), array T as in A038738.at n=9A038741a(n) = Sum_{i=0..n} binomial(2*n+i,n-i).at n=9A108080