135137

Appears in sequences

• Markoff (or Markov) numbers: union of positive integers x, y, z satisfying x^2 + y^2 + z^2 = 3*x*y*z.at n=31A002559
• Strong pseudoprimes to base 30.at n=31A020256
• In base 2: n sets a new record for the number of 'Reverse and Add' steps needed to reach a palindrome starting with n.at n=15A066144
• Non-Fibonacci Markoff numbers.at n=18A111032
• Markov numbers that are semiprime.at n=8A182585
• Consider the partition of the positive odd integers into minimal blocks such that concatenation of numbers in each block is an odious number (A000069). Sequence lists the odious numbers obtained in this way.at n=25A248477
• Composite Markoff numbers.at n=15A256395
• Second member m_2(n) of the Markoff triple MT(n) with largest member m(n) = A002559(n), and smallest member m_1(n) = A305313(n), for n >= 1. These triples are conjectured to be unique.at n=57A305314
• Irregular triangle read by rows: Maximal numbers of the Markoff triples at level L of the Markoff tree, with members of the triples ordered increasingly.at n=29A327345
• Alternative version of the Markov tree A327345.at n=17A368546
• The odd Markoff numbers.at n=23A388291