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A111228
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Numbers where the digits are alternatively even and odd and no digit is 0.
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0
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1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 14, 16, 18, 21, 23, 25, 27, 29, 32, 34, 36, 38, 41, 43, 45, 47, 49, 52, 54, 56, 58, 61, 63, 65, 67, 69, 72, 74, 76, 78, 81, 83, 85, 87, 89, 92, 94, 96, 98, 121, 123, 125, 127, 129, 141, 143, 145, 147, 149, 161, 163, 165, 167, 169, 181, 183
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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EXAMPLE
| As an example: 236721 because 2 is even, 3 is odd, 6 is even, 7 is odd, 2 is even and 1 is odd. Again: 58 (5 odd and 8 even) is in the sequence but not 59 (both are odd).
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MATHEMATICA
| Select[Range[300], Length[Split[Mod[ #, 2] & /@ (id = IntegerDigits[ # ])]] == Length[id] && Times @@ id > 0 &] (*Chandler*)
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CROSSREFS
| Sequence in context: A130843 A087087 A050742 * A171827 A107743 A116066
Adjacent sequences: A111225 A111226 A111227 * A111229 A111230 A111231
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KEYWORD
| easy,nonn,base
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AUTHOR
| Paolo P. Lava & Giorgio Balzarotti (paoloplava(AT)gmail.com), Oct 27 2005
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EXTENSIONS
| Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 01 2005
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