77671

Appears in sequences

• In the '3x+1' problem, these values for the starting value set new records for highest point of trajectory before reaching 1.at n=18A006884
• Strong pseudoprimes to base 93.at n=31A020319
• '3x+1' record-setters (blowup factor).at n=12A025587
• Initial number for record sum of numbers in trajectory of 3x+1 problem.at n=40A033495
• Sum of terms of n-th row of A077321.at n=22A077324
• sigma(n) + n is a cube.at n=14A114070
• Triangle read by rows, where t(n,1) = 1, t(n,m) = t(n,m-1) + (largest nonprime {1 or composite} in row {n-1}).at n=51A120853
• 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=16A213215
• Least m such that the Collatz (3x+1) iteration of m has exactly n increasing peak values.at n=25A221470
• Least number whose Collatz (3x+1) trajectory has a number greater than 10^n.at n=9A222291
• Least number whose Collatz 3x+1 trajectory contains a number >= 2^n.at n=30A222292
• Least number k having Collatz (3x+1) sequence with exactly n pairs of odd and even numbers in a row.at n=16A222598
• a(n) is the smallest k such that the Collatz sequence for k includes a record number of consecutive tripling steps.at n=15A350370