1521520

Appears in sequences

• a(n) = least common multiple of {1, 4, 7, 10, 13 ..., 3n+1} (A016777).at n=7A051536
• Sum of the coefficients of the Schur function expansion of the square of the Vandermonde determinant in n variables.at n=6A072888
• a(n) = n*(n-1)*(n-2)*(n-3)*(n^2-3*n-2)/48.at n=22A093566
• Binomial coefficients of the form C(k, 3) that are products of two other binomial coefficients of the form C(k, 3).at n=4A196568
• Quarter-square tetrahedrals: a(n) = k*(k - 1)*(k - 2)/6, k = A002620(n).at n=29A217482
• Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 35.at n=5A233898
• Number of (n+1)X(6+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 35.at n=1A233902
• T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 35 (35 maximizes T(1,1)).at n=22A233903
• T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 35 (35 maximizes T(1,1)).at n=26A233903
• Tetrahedral numbers divisible by a record number of smaller tetrahedral numbers.at n=7A319788
• Tetrahedral numbers that are products of smaller tetrahedral numbers.at n=6A364151