53449

Appears in sequences

• Number of 5-tuples of different integers from [ 1,n ] with no common factors among pairs.at n=43A015698
• a(n) = Sum_{k=0..n} binomial(k, 7*(n-k)).at n=20A306721
• Number of binary strings of length n that contain at least one maximal run of ones of even length.at n=16A387332
• a(n) = Sum_{k=0..floor(4*n/7)} binomial(k,4*n-7*k).at n=35A392355