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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A165670 Braille dot pattern for A to Z and accented letters, reading dots by row into binary. 0
1, 5, 3, 11, 9, 7, 15, 13, 6, 14, 17, 21, 19, 27, 25, 23, 31, 29, 22, 30, 49, 53, 51, 59, 57, 55, 63, 61, 54, 62, 33, 37, 35, 43, 41, 39, 47, 45, 38, 46 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The 6 dot positions with 3 rows are first interpreted as a binary number, a embossed dot presented by 1, a flat position by 0, the upper left position the most significant bit; the result is converted to base 10.

Written horizontally with six consecutive 0's or 1's, a(1)=100000=1, a(2)=101000=5, a(3)=110000=3, a(4)=110100=11, a(5)=100100=9, .. .

Letters A to Z are a(1) to a(22) - a(40) is W - a(24) to a(26). a(23) to a(39) are specific to French (essentially diacritical letters with an accent on the first E).

LINKS

Table of n, a(n) for n=1..40.

Wikipedia, Braille.

CROSSREFS

Sequence in context: A258333 A137613 A259650 * A221869 A237116 A141234

Adjacent sequences:  A165667 A165668 A165669 * A165671 A165672 A165673

KEYWORD

nonn,base,word,fini,full

AUTHOR

Paul Curtz, Sep 24 2009

EXTENSIONS

Edited by R. J. Mathar, Sep 29 2009

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 19 06:02 EST 2019. Contains 329310 sequences. (Running on oeis4.)