414214domain: NAppears in sequencesNumber of 0..n arrays x(0..4) of 5 elements with nondecreasing average value.at n=21A200765a(n) = coefficient of x^n in A(x) where 1 = Sum_{n=-oo..+oo} (2*x + (-x)^n*A(x)^n)^n.at n=12A359673G.f. A(x) satisfies 1 = Sum_{n=-oo..+oo} (A(x)^n - 2*x)^n.at n=12A378829