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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: A223317 A027131 A319803 * A130124 A265417 A076342

Adjacent sequences:  A055943 A055944 A055945 * A055947 A055948 A055949

KEYWORD

base,nonn

AUTHOR

Henry Bottomley, Jul 18 2000

STATUS

approved

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Last modified January 19 04:09 EST 2020. Contains 331031 sequences. (Running on oeis4.)