1557270

Appears in sequences

• a(n) = binomial(n+4,4)*binomial(n+5,4)*binomial(n+6,4)/75.at n=7A107915
• Number of 3 X 7 matrices with elements in 0..n with each row and each column in nondecreasing order. 3,7,n can be permuted, see formula.at n=4A140907
• Number of 4 X 7 matrices with elements in 0..n with each row and each column in nondecreasing order. 4,7,n can be permuted, see formula.at n=3A140908
• Triangle T(n,m) read by rows: T(n,m) = Product_{i=0..6} binomial(n+i,m)/binomial(m+i,m).at n=31A142467
• Triangle T(n,m) read by rows: T(n,m) = Product_{i=0..6} binomial(n+i,m)/binomial(m+i,m).at n=32A142467
• Triangle T(i,j) read by rows: Number of plane bipolar orientations with i+1 vertices and j+1 faces.at n=32A296419
• Triangle T(n,k) read by rows: T(n,k) = Product_{j=0..n-1} binomial(n+j,k)/binomial(k+j,k).at n=31A342972
• Triangle T(n,k) read by rows: T(n,k) = Product_{j=0..n-1} binomial(n+j,k)/binomial(k+j,k).at n=32A342972