82381

Appears in sequences

• Number of arrays of n integers in -2..2 with sum zero and equal numbers of elements greater than zero and less than zero.at n=9A201805
• T(n,k)=Number of arrays of n integers in -k..k with sum zero and equal numbers of elements greater than zero and less than zero.at n=53A201811
• a(n) = Sum_{k=0..n} binomial(n,k) * binomial(n*k,k).at n=5A383120