152581domain: NAppears in sequencesa(n) = (n+1)*(n+2)^2*(n+3)*(n+4)*(5*n^2 + 18*n + 15)/720.at n=9A107962Number of n X 2 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.at n=10A278772