88872

Appears in sequences

• Triangle T(n,m), [x*A(x)]^m=sum(n>=m T(n,m)*x^n), where A(x) satisfies x*A(x)^2= -(2*x*A(x)+sqrt(1-4*x*A(x))-1)/(4*x*A(x)+sqrt(1-4*x*A(x))-1).at n=30A188109
• Ordered (2,2)-selections from the multiset {1,1,2,2,3,3,...,n,n}.at n=24A188667