OFFSET
1,2
COMMENTS
For root c: f(n) = (1+c)*f(n-1)/(f(n-1)^2+1).
FORMULA
a(n+1) = 3*a(n)*A163262(n). - Philippe Deléham, Oct 11 2011
PROG
(PARI) f(n) = if (n==1, 1, 3*f(n-1)/(f(n-1)^2+1));
a(n) = numerator(f(n)); \\ Michel Marcus, Mar 05 2019
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Mark Dols, Jul 23 2009
EXTENSIONS
More terms from Michel Marcus, Mar 05 2019
STATUS
approved