-3801900

Appears in sequences

• Expansion of (1-4*x)^(5/2).at n=18A002422
• Square array read by ascending antidiagonals: T(n,k) = [x^(3*k)] ( (1 + x)^(n+3)/(1 - x)^(n-3) )^k for n, k >= 0.at n=42A364519