39364

Appears in sequences

• Record highest point of trajectory before reaching 1 in '3x+1' problem, corresponding to starting values in A006884.at n=7A006885
• Largest term in periodic part of continued fraction expansion of square root of -1+3^n.at n=17A077627
• LCM of terms in periodic part of continued fraction expansion of square root of -1+3^n.at n=17A077635
• Maximal term in Collatz-iteration started at -1+2^n.at n=8A087701
• a(n) = 2*(3^n - 1).at n=9A100774
• Number of palindromes (in base 3) below 3^n.at n=18A117862
• A modified Legendre-binomial transform of 2^n for p=3.at n=10A117983
• Partial sums of A162436.at n=17A164123
• Consider the base-3 Kaprekar map n->K(n) defined in A164993. Sequence gives numbers belonging to cycles, including fixed points.at n=18A164998
• Consider the base-3 Kaprekar map n->K(n) defined in A164993. Sequence gives numbers belonging to cycles of length greater than 1.at n=13A165000
• The maximum value of the Collatz (3x+1) iteration beginning at A223699(n).at n=44A223700
• a(n) is the last number in the (2n+1)-element alternating sequence of x/2 and (3x+1) iterations starting with A277215(n).at n=9A277874
• p-INVERT of (1,1,2,2,3,3,...) (A008619), where p(S) = 1 - S - S^2.at n=10A289806
• First differences of A302774; Number of terms in A303762 that have prime(n) as their largest prime factor (A006530).at n=18A303749
• Entries of A336938 without duplicates.at n=7A336994
• Records in the trajectory of all positive integers in the 3x+1 or Collatz problem, including the trajectory [1, 4, 2, 1] of 1.at n=26A347652
• Numbers that are palindromes in both ternary and balanced ternary representations with representations that are different.at n=13A354886
• Number of integer partitions of n whose median part is the smallest.at n=47A361860