637408200domain: NAppears in sequencesNumber of (2,2; n,n)-partitions of a chain of length n^2 + n.at n=10A055660Number of (3,3; n,n)-partitions of a chain of length n^2 + n.at n=7A055663Denominator of Sum_{i+j+k=n, i,j,k>=1} (i*j)/k.at n=27A076175