The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A055946 n + reversal of base 3 digits of n (written in base 10). 3
 0, 2, 4, 4, 8, 12, 8, 12, 16, 10, 20, 30, 16, 26, 36, 22, 32, 42, 20, 30, 40, 26, 36, 46, 32, 42, 52, 28, 56, 84, 40, 68, 96, 52, 80, 108, 40, 68, 96, 52, 80, 108, 64, 92, 120, 52, 80, 108, 64, 92, 120, 76, 104, 132, 56, 84, 112, 68, 96, 124, 80, 108, 136, 68, 96, 124, 80 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS If n has an even number of digits in base 3 then a(n) is a multiple of 4 LINKS Seiichi Manyama, Table of n, a(n) for n = 0..10000 FORMULA a(n) =n+A030102(n) MAPLE A055946 := proc(n) n+A030102(n) ; end proc: # R. J. Mathar, May 28 2016 MATHEMATICA Array[#+FromDigits[Reverse[IntegerDigits[#, 3]], 3]&, 70, 0] (* Harvey P. Dale, Nov 09 2017 *) CROSSREFS Cf. A056964. Sequence in context: A027131 A338986 A319803 * A130124 A265417 A076342 Adjacent sequences: A055943 A055944 A055945 * A055947 A055948 A055949 KEYWORD base,nonn AUTHOR Henry Bottomley, Jul 18 2000 STATUS approved

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

Last modified November 26 21:15 EST 2022. Contains 358362 sequences. (Running on oeis4.)