57756

Appears in sequences

• Integer part of ((4th elementary symmetric function of 1,2,..,n)/(2nd elementary symmetric function of 1,2,...,n)).at n=40A024173
• Triangle read by rows: T(n,k) is the number of ternary words of length n on {0,1,2}, having k isolated 0's (n >= 0, k >= 0).at n=43A120924
• Numbers k such that k and k^2 use only the digits 0, 3, 5, 6 and 7.at n=10A136937
• Numbers k such that k and k^2 use only the digits 1, 3, 5, 6 and 7.at n=15A137033
• Numbers k such that k and k^2 use only the digits 2, 3, 5, 6 and 7.at n=27A137080
• Numbers k such that k and k^2 use only the digits 3, 4, 5, 6 and 7.at n=10A137121
• Numbers k such that k and k^2 use only the digits 3, 5, 6, 7 and 8.at n=8A137132
• Numbers k such that k and k^2 use only the digits 3, 5, 6, 7 and 9.at n=7A137133
• Number of permutations p of 1,2,...,n satisfying |p(i+1)-p(i)|<>5 and |p(j+5)-p(j)|<>1 for all i=1..n-1, j=1..n-5.at n=9A189564
• Number of ways to place n nonattacking composite pieces rook + rider[1,5] on an n X n chessboard.at n=8A189852