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A014263
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Numbers that contain even digits only.
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22
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0, 2, 4, 6, 8, 20, 22, 24, 26, 28, 40, 42, 44, 46, 48, 60, 62, 64, 66, 68, 80, 82, 84, 86, 88, 200, 202, 204, 206, 208, 220, 222, 224, 226, 228, 240, 242, 244, 246, 248, 260, 262, 264, 266, 268, 280, 282, 284, 286, 288, 400, 402, 404, 406, 408, 420, 422, 424
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| The set of real numbers between 0 and 1 that contain no odd digits in their decimal expansion has Hausdorff dimension log 5 / log 10.
Integers written in base 5 and then doubled (in base 10). - Frank Adams-Watters, Mar 15 2006
A045888(a(n)) = 0. [From Reinhard Zumkeller, Aug 25 2009]
a(n) = A179082(n) for n <= 25. [From Reinhard Zumkeller, Jun 28 2010]
The carryless mod 10 "even" numbers (cf. A004529) sorted and duplicates removed. - N. J. A. Sloane, Aug 03 2010.
Complement of A007957; A196564(a(n)) = 0; A103181(a(n)) = 0. [Reinhard Zumkeller, Oct 04 2011]
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REFERENCES
| K. J. Falconer, The Geometry of Fractal Sets, Cambridge, 1985; p. 19.
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LINKS
| Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
Index entries for sequences related to carryless arithmetic
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MATHEMATICA
| Select[Range[450], And@@EvenQ[IntegerDigits[#]]&] [From Harvey P. Dale, Jan. 30, 2011]
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PROG
| (Haskell)
a014263 n = a014263_list !! (n-1)
a014263_list = filter (all (`elem` "02468") . show) [0, 2..]
-- Reinhard Zumkeller, Jul 05 2011
(MAGMA) [n: n in [0..424] | Set(Intseq(n)) subset [0..8 by 2]]; // Bruno Berselli, Jul 19 2011
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CROSSREFS
| Cf. A061810, A061811, A007091.
Cf. A014261; subsequence of A059708.
Sequence in context: A179082 A194376 A062897 * A169906 A061651 A131122
Adjacent sequences: A014260 A014261 A014262 * A014264 A014265 A014266
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KEYWORD
| nonn,base,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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