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A050724
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Decimal expansion of 3^n contains no pair of consecutive equal digits (probably finite).
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3
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 21, 22, 24, 26, 42, 66, 67, 133
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| No additional terms up to 50000. {From Harvey P. Dale, Nov 15 2011]
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EXAMPLE
| 3^133 = 2865014852390475710679572105323242035759805416923029389510561523.
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MATHEMATICA
| Select[Range[0, 500], !MemberQ[Differences[IntegerDigits[3^#]], 0]&] (* From Harvey P. Dale, Nov 15 2011 *)
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CROSSREFS
| Cf. A030700, A046261, A046269.
Sequence in context: A057889 A110029 A023779 * A194403 A161979 A092968
Adjacent sequences: A050721 A050722 A050723 * A050725 A050726 A050727
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KEYWORD
| nonn,base
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.
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