login
This site is supported by donations to The OEIS Foundation.

 

Logo

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A064160 The integer digits of n joined to the integer digits of 2n contain each of the digits from 1 to 9 once. 5
6729, 6792, 6927, 7269, 7293, 7329, 7692, 7923, 7932, 9267, 9273, 9327 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

David Wells, The Penguin Dictionary of Curious and Interesting Numbers, p. 160 (Rev. ed. 1997).

LINKS

Table of n, a(n) for n=0..11.

EXAMPLE

Twice 7269 equals 14538 and those two numbers comprise the digits from 1 to 9.

MATHEMATICA

Select[ Range[ 1000000 ], {1, 2, 3, 4, 5, 6, 7, 8, 9} == Sort[ Join[ IntegerDigits[ # ], IntegerDigits[ 2 # ] ] ] & ]

CROSSREFS

Sequence in context: A099778 A035905 A049507 * A249463 A257486 A253230

Adjacent sequences:  A064157 A064158 A064159 * A064161 A064162 A064163

KEYWORD

base,fini,full,nonn

AUTHOR

Harvey P. Dale, Sep 15 2001

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified August 20 03:34 EDT 2017. Contains 290823 sequences.