A055946 n + reversal of base 3 digits of n (written in base 10).

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

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