66656

Appears in sequences

• Numbers having four 6's in base 10.at n=23A043516
• a(n) contains n digits (either '5' or '6') and is divisible by 2^n.at n=4A053336
• Triangle T, read by rows, T(n,k) = T(n-k)*2^(k*(n-k)) such that column 0 of the matrix square of T equals column 0 of T shifted left: [T^2](n,k) = T(n-k+1,0)*2^(k*(n-k)) for n>=k>=0.at n=28A118024
• Column 0 of triangle A118024; also, column 0 of the matrix square of A118024 equals this sequence shifted 1 place left.at n=7A118025
• Number of nondecreasing -n..n vectors of length 3 whose dot product with some nonincreasing -n..n vector equals 3.at n=37A226400
• Moving the rightmost digit of a number to place it furthest to the left adds 9 to the number.at n=31A363820