OFFSET
1,4
COMMENTS
See the Aigner reference, Proposition 3.13., p. 55.
If m(n) is odd then m(n) = 1 + 4*a(n), and if m(n) is even then m(n) = 2 + 32* a(n).
REFERENCES
Martin Aigner, Markov's Theorem and 100 Years of the Uniqueness Conjecture, Springer, 2013, p. 55.
FORMULA
If m(n) is odd then a(n) = (m(n) - 1)/4, and if m(n) is even then a(n) = (m(n) - 2)/32, for the Markoff numbers m(n) = A002559(n), for n >= 1.
EXAMPLE
a(3) = 1 because m(3) - 1 = 4 = a(3)*4. m(3) is odd.
a(6) = 1 because m(6) - 2 = 32 = a(6)*32. m(6) is even.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Jul 26 2019
STATUS
approved