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A256098
Denominators for the numerators A256097.
1
1, 2, 1, 1, 4, 2, 4, 1, 1, 6, 3, 2, 3, 6, 1, 1, 8, 4, 8, 2, 8, 4, 8, 1, 1, 10, 5, 10, 5, 2, 5, 10, 5, 10, 1, 1, 12, 6, 4, 3, 12, 2, 12, 3, 4, 6, 12, 1, 1, 14, 7, 14, 7, 14, 7, 2, 7, 14, 7, 14
OFFSET
1,2
COMMENTS
The corresponding numerators are given in A256097.
See A256097 for comments, references and links.
FORMULA
a(n) = denominator(R(n)), with the rational (in lowest terms) R(n) = f(n) + (n - f(n)^2)/(2*f(n)) = (f(n) + n/f(n))/2 with f(n) := floor(sqrt(n)) = A000196(n), for n >= 1.
EXAMPLE
See A256097.
CROSSREFS
Sequence in context: A054090 A239456 A122517 * A177276 A123199 A212282
KEYWORD
nonn,easy,frac
AUTHOR
Wolfdieter Lang, Mar 24 2015
STATUS
approved