OFFSET
1,1
COMMENTS
See A188014.
MATHEMATICA
r=5^(1/2)); k=4;
t=Table[Floor[n*r]-Floor[(n-k)*r]-Floor[k*r], {n, 1, 220}]
Flatten[Position[t, 0]] (*A188219*)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Mar 24 2011
STATUS
approved