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A055944
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a(n) = n + (reversal of base-2 digits of n) (written in base 10).
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13
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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
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OFFSET
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0,2
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COMMENTS
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If n has an even number of digits in base-2 then a(n) is a multiple of 3.
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LINKS
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FORMULA
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MATHEMATICA
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f[n_] := Block[{id = IntegerDigits[n, 2]}, FromDigits[id + Reverse@id, 2]]; Array[f, 69, 0] (* Robert G. Wilson v, Nov 07 2010 *)
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PROG
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(Haskell)
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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