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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A049064 Describe the previous term in binary (method A - initial term is 0). 3
0, 10, 1110, 11110, 100110, 1110010110, 111100111010110, 100110011110111010110, 1110010110010011011110111010110, 1111001110101100111001011010011011110111010110, 1001100111101110101100111100111010110111001011010011011110111010110 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Method A = 'frequency' (in binary mode) followed by 'digit'-indication.

The number of digits of a(n) is A001609(n) except for n = 2. See the link from T. Sillke below. - Jianing Song, Mar 16 2019

LINKS

Kade Robertson, Table of n, a(n) for n = 1..18

Kade Robertson, Table of n, a(n) for n = 1..31

T. Sillke, The binary form of Conway's sequence

FORMULA

a(n) = A001391(n-1), n > 1. - R. J. Mathar, Oct 15 2008

EXAMPLE

E.g., the term after 11110 is obtained by saying "four (i.e., 100 in binary mode) 1, one 0", which gives 100110.

CROSSREFS

Cf. A001387 (initial term is 1), A001391, A001609 (number of digits), A259710 (written in decimal).

Decimal look-and-say sequences: A005150, A006751, A006715, A001140, A001141, A001143, A001145, A001151, A001154.

Sequence in context: A036058 A001155 A001391 * A267246 A266589 A015026

Adjacent sequences:  A049061 A049062 A049063 * A049065 A049066 A049067

KEYWORD

base,easy,nice,nonn

AUTHOR

Olivier de Mouzon

EXTENSIONS

Edited by Charles R Greathouse IV, Apr 06 2010

a(11) from Kade Robertson, Jun 24 2015

Offset corrected by Jianing Song, Mar 16 2019

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 October 21 08:47 EDT 2019. Contains 328292 sequences. (Running on oeis4.)