838830

Appears in sequences

• a(n) = n*(n^3+n^2+2*n+1).at n=30A186636
• Number of (n+1)X4 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing.at n=9A203447