28697812

Appears in sequences

• Largest term in periodic part of continued fraction expansion of square root of -1+3^n.at n=29A077627
• Maximal term in Collatz-iteration started at -1+2^n.at n=14A087701
• a(n) = 2*(3^n - 1).at n=15A100774
• Number of palindromes (in base 3) below 3^n.at n=30A117862
• Partial sums of A162436.at n=29A164123
• 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=15A277874