1235521

Appears in sequences

• Number of degree-n permutations of order dividing 7.at n=13A053497
• Triangle read by rows: let f(n,m)=Product[k + m + 1, {k, 0, n}]; t0(n,m)=f(n, m)/(f(n - m, m)); then t(n,m)=t0(n,m)+t0(n,n-m).at n=21A155720
• Triangle read by rows: let f(n,m)=Product[k + m + 1, {k, 0, n}]; t0(n,m)=f(n, m)/(f(n - m, m)); then t(n,m)=t0(n,m)+t0(n,n-m).at n=27A155720
• Symmetrical product form polynomial as triangle sequence coefficients: q(x,n)=Product[x + 2*n - i + 1, {i, 0, n - 1}]; p(x,n)=q(x,n)+x^2+x^n*q(1/x,m);t(n,m)=coefficients(p(x,n).at n=21A155725
• Symmetrical product form polynomial as triangle sequence coefficients: q(x,n)=Product[x + 2*n - i + 1, {i, 0, n - 1}]; p(x,n)=q(x,n)+x^2+x^n*q(1/x,m);t(n,m)=coefficients(p(x,n).at n=27A155725
• Number of 3 X 3 X 3 triangular nonnegative integer arrays with all sums of an element and its neighbors <= n.at n=26A166189
• Centered pentachoral numbers.at n=26A365205