The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A174658 Balanced ternary numbers with equal count of negative trits and positive trits. 8
 0, 2, 6, 8, 16, 18, 20, 24, 26, 32, 46, 48, 52, 54, 56, 60, 62, 70, 72, 74, 78, 80, 86, 96, 98, 104, 130, 136, 138, 142, 144, 146, 154, 156, 160, 162, 164, 168, 170, 178, 180, 182, 186, 188, 194, 208, 210, 214, 216, 218, 222, 224, 232, 234, 236, 240, 242, 248, 258 (list; graph; refs; listen; history; text; internal format)
 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 Cf. A174657, A174659, A065363, A140267, A257869. Sequence in context: A278834 A336896 A306906 * A326300 A266074 A191822 Adjacent sequences:  A174655 A174656 A174657 * A174659 A174660 A174661 KEYWORD base,nonn AUTHOR Daniel Forgues, Mar 26 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 18 14:29 EDT 2021. Contains 345114 sequences. (Running on oeis4.)