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A033082 Numbers n with property that all pairs of consecutive base 4 digits differ by 2. 0
1, 2, 3, 7, 8, 13, 29, 34, 55, 119, 136, 221, 477, 546, 887, 1911, 2184, 3549, 7645, 8738, 14199, 30583, 34952, 56797, 122333, 139810, 227191 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

MATHEMATICA

Join[{1, 2, 3}, Select[Range[230000], Union[Abs[Differences[ IntegerDigits[ #, 4]]]]=={2}&]] (* From Harvey P. Dale, Sep 20 2011 *)

CROSSREFS

Sequence in context: A003307 A105601 A199971 * A084406 A075648 A071527

Adjacent sequences:  A033079 A033080 A033081 * A033083 A033084 A033085

KEYWORD

nonn,base

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 15 02:50 EST 2012. Contains 205694 sequences.