428571

Appears in sequences

• Numbers k such that k and 2*k are anagrams.at n=12A023086
• Multiples of 142857.at n=2A101202
• Maximal value of GCD of 2 distinct n-digit numbers using the same digits.at n=4A126687
• The periodic part of the decimal expansion of n/(n+1). Any initial 0's are to be placed at end of cycle.at n=26A212720
• Least numbers x such that the ratio of the sum of all the cyclic permutations of x, plus the unpermuted number, and x itself is equal to n.at n=6A247552
• a(n) = floor(((n mod 6)+1) * 10^floor((n/6)+1) / 7).at n=32A343915
• Array read by ascending antidiagonals: A(n,m) is obtained by concatenating the digits of floor(n/m) with those of its fractional part up to the digits of the first period, where the leading and trailing 0's are omitted.at n=42A382068
• Irregular table, read by rows, where row z = 2, 3, 4, ... lists pairs (y, x) such that x + y/z = concat(y, x)/z with 0 < y < z, gcd(y, z) = 1, and primitive x, cf. comments.at n=21A383188