69907

Appears in sequences

• Numbers whose set of base-16 digits is {1,3}.at n=31A032923
• Numbers whose base-4 representation has exactly 9 runs.at n=2A043600
• Numbers n such that number of runs in the base 4 representation of n is congruent to 1 mod 8.at n=26A043851
• Numbers n such that number of runs in the base 4 representation of n is congruent to 0 mod 9.at n=2A043858
• Numbers k such that number of runs in the base 4 representation of k is congruent to 9 mod 10.at n=2A043876
• a(0)=2. a(n+1) = 2*a(n) + period 4: repeat -5,1,3,1.at n=20A161204
• Numbers k with squares that are concatenations k^2 = x//y such that x is an anagram of y.at n=31A162945