1527181domain: NAppears in sequencesNumber of nondecreasing arrangements of n+3 numbers in 0..8 with each number being the sum mod 9 of three others.at n=14A183903G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n+1)/2) = Sum_{n>=0} x^n / [Product_{k=1..n} 1 - k*x].at n=11A325452