OFFSET
1,2
COMMENTS
Conjecture: -1 < n*r - a(n) < 2 for n >= 1, where r = 4 - sqrt(5).
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
FORMULA
Conjecture: a(n) = 5*n + 2 - 2 * floor((n+1)*phi), where phi is the golden mean. - Chunqing Liu, Sep 27 2023
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 02 2017
STATUS
approved