OFFSET
1,2
COMMENTS
Numbers for which the sum of trits is zero.
LINKS
Daniel Forgues, Table of n, a(n) for n=1..14309
MATHEMATICA
(* First run the program for A065363 to define balTernDigits *) A174658 = Select[Range[0, 299], Plus@@balTernDigits[#] == 0 &] (* Alonso del Arte, Feb 24 2011 *)
PROG
(Python)
def a(n):
s=0
x=0
while n>0:
x=n%3
n //= 3
if x==2:
x=-1
n+=1
s+=x
return s
print([n for n in range(301) if a(n)==0]) # Indranil Ghosh, Jun 07 2017
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Daniel Forgues, Mar 26 2010
STATUS
approved