7456539

Appears in sequences

• a(n) = 3 A113405(n)- A113405(n+1).at n=26A133511
• a(n) = 3*A131090(n) - A131090(n+1).at n=26A135261
• For the Collatz (3x+1) iterations starting with the odd numbers k, a(n) is the smallest k such that the trajectory contains at least n successive odd numbers == 3 (mod 4).at n=22A213215
• Least number k having Collatz (3x+1) sequence with exactly n pairs of odd and even numbers in a row.at n=22A222598
• a(n) is the smallest k such that the Collatz sequence for k includes a record number of consecutive tripling steps.at n=21A350370