OFFSET
1,1
COMMENTS
FORMULA
a(n)=floor(s*a(n-1)) if n odd, a(n)=floor(r*a(n-1)) if n even, where r=sqrt(3), s=(r+3)/2, a(1)=floor(s).
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Nov 27 2010
STATUS
approved