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A055944 n + reversal of base 2 digits of n (written in base 10). 9
0, 2, 3, 6, 5, 10, 9, 14, 9, 18, 15, 24, 15, 24, 21, 30, 17, 34, 27, 44, 25, 42, 35, 52, 27, 44, 37, 54, 35, 52, 45, 62, 33, 66, 51, 84, 45, 78, 63, 96, 45, 78, 63, 96, 57, 90, 75, 108, 51, 84, 69, 102, 63, 96, 81, 114, 63, 96, 81, 114, 75, 108, 93, 126, 65, 130, 99, 164, 85 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

If n has an even number of digits in base 2 then a(n) is a multiple of 3.

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

FORMULA

a(n) =n+A030101(n)

MATHEMATICA

f[n_] := Block[{id = IntegerDigits[n, 2]}, FromDigits[id + Reverse@id, 2]]; Array[f, 69, 0] (* Robert G. Wilson v, Nov 07 2010 *)

PROG

(Haskell)

a055944 n = n + a030101 n  -- Reinhard Zumkeller, Nov 14 2011

CROSSREFS

Cf. A035522 (iterated), A055948.

Sequence in context: A064924 A196330 A256662 * A073740 A239956 A077320

Adjacent sequences:  A055941 A055942 A055943 * A055945 A055946 A055947

KEYWORD

base,nonn

AUTHOR

Henry Bottomley, Jul 18 2000

STATUS

approved

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Last modified January 18 19:30 EST 2020. Contains 331029 sequences. (Running on oeis4.)