143856

Appears in sequences

• a(n) = (n^(n+1) + n^(n-1))/2.at n=5A062023
• Numbers which can be expressed as the product of numbers made of only sixs.at n=21A161144
• a(n) = n^5*(n^2 + 1)/2.at n=6A168364
• Numbers with prime factorization pq^4r^5.at n=25A190468
• Number of (n+2) X 3 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=33A202195
• Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 1 1 vertically.at n=8A209227
• Number of n X n 0..5 arrays with corresponding row and column sums equal.at n=2A229869
• T(n,k)=Number of n X n 0..k arrays with corresponding row and column sums equal.at n=23A229870
• a(n)/144 is the maximum squared volume of a tetrahedron with the sum of its integer edge lengths equal to n.at n=30A371073