281403

Appears in sequences

• Sum along upward diagonal of Pascal triangle from center.at n=30A010757
• a(n) = T(n, 2*n-10), T given by A027926.at n=15A027933
• Greatest number in row n of array T given by A027935.at n=20A027945
• a(n) = Sum_{i=0..n} binomial(2*n-i, n+i).at n=10A108081