160867

Appears in sequences

• Composite numbers whose prime factors contain no digits other than 6 and 7.at n=13A036322
• Numbers n such that n | 13^n + 11^n + 9^n + 7^n + 5^n + 3^n +1.at n=12A057833
• Triangular array read by rows. T(n,k) is the number of elements of rank k in the order complex of the poset P = [n] X [n], n=0, k=0 or n>0, 0<=k<=2n-1.at n=49A337192
• a(n) = Sum_{k = 0..n-1} binomial(n-1,k)^2*binomial(n+k,k).at n=7A361717