OFFSET
1,2
COMMENTS
See A190483.
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..1000
MATHEMATICA
PROG
(Python)
from sympy import sqrt, floor
r=sqrt(2)
def a190483(n): return floor((2*n + 1)*r) - 2*floor(n*r) - floor(r)
print([n for n in range(1, 501) if a190483(n)==1]) # Indranil Ghosh, Jul 02 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, May 11 2011
STATUS
approved