OFFSET
1,2
COMMENTS
Complement of A283775.
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
FORMULA
a(n+1) - a(n) is in {1,4,5} for every n.
MATHEMATICA
r = Sqrt[3]; z = 350; t = Table[Floor[n*r], {n, 1, z}]; u = Mod[t, 2];
Flatten[Position[u, 0]] (* A283775 *)
Flatten[Position[u, 1]] (* A283776 *)
Select[Range[200], OddQ[Floor[# Sqrt[3]]]&] (* Harvey P. Dale, Nov 20 2020 *)
PROG
(PARI) for(n=1, 125, if(floor(n*sqrt(3))%2==1, print1(n, ", "))) \\ Indranil Ghosh, Mar 21 2017
(Python)
import math
from sympy import sqrt
print([n for n in range(1, 126) if int(math.floor(n*sqrt(3)))%2==1]) # Indranil Ghosh, Mar 21 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Mar 19 2017
STATUS
approved