OFFSET
1,2
COMMENTS
a(n)/n tends to 2.
FORMULA
Sequence consists of the positive integers m that generate "4" using the formula of A089959: floor( 1/({m*k}*(1 - {m*k}) where k = 0.6180339... = phi^(-1) and {x} = fractional part.
EXAMPLE
a(5) = 9 since A089959(9) = 4.
CROSSREFS
KEYWORD
nonn
AUTHOR
Gary W. Adamson, Nov 16 2003
STATUS
approved