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A050725 Decimal expansion of 4^n contains no pair of consecutive equal digits (probably finite). +0
2
0, 1, 2, 3, 4, 5, 6, 7, 10, 11, 14, 15, 16, 17, 18, 24, 27, 28, 33, 34, 40, 52, 63 (list; graph; listen)
OFFSET

0,3

EXAMPLE

4^63 = 85070591730234615865843651857942052864.

CROSSREFS

Cf. A030701, A046262, A046270.

Sequence in context: A064295 A001751 A116000 this_sequence A080571 A165805 A165722

Adjacent sequences: A050722 A050723 A050724 this_sequence A050726 A050727 A050728

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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