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A050732 Numbers of form 2^k (for values of k see A050723) containing no pair of consecutive equal digits (probably finite). 0
1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 131072, 1048576, 2097152, 4194304, 268435456, 536870912, 1073741824, 2147483648, 4294967296, 17179869184, 34359738368, 68719476736, 137438953472 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..29.

Index to divisibility sequences

EXAMPLE

2^18 = 262144 is missing, for example.

MATHEMATICA

Select[2^Range[0, 40], FreeQ[Differences[IntegerDigits[#]], 0] &] (* Jayanta Basu, May 31 2013 *)

CROSSREFS

Cf. A043096, A050723.

Sequence in context: A274867 A274866 A274865 * A260814 A274864 A274863

Adjacent sequences:  A050729 A050730 A050731 * A050733 A050734 A050735

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Sep 15 1999

STATUS

approved

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Last modified May 19 18:35 EDT 2022. Contains 353847 sequences. (Running on oeis4.)