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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A001202 a(1)=0, a(2n) = a(n)+1, a(2n+1) = 10*a(n+1). 1
0, 1, 10, 2, 100, 11, 20, 3, 1000, 101, 110, 12, 200, 21, 30, 4, 10000, 1001, 1010, 102, 1100, 111, 120, 13, 2000, 201, 210, 22, 300, 31, 40, 5, 100000, 10001, 10010, 1002, 10100, 1011, 1020, 103, 11000, 1101, 1110, 112, 1200, 121, 130, 14, 20000, 2001, 2010 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

T. D. Noe, Table of n, a(n) for n = 1..8192

MATHEMATICA

Clear[t]; t[1] = 0; t[n_] := t[n] = If[Mod[n, 2] == 0, t[n/2] + 1, 10*t[(n + 1)/2]]; Table[t[n], {n, 2^8}] (* T. D. Noe, Jun 26 2012 *)

PROG

(MAGMA) [n eq 1 select 0 else IsEven(n) select Self(n div 2)+1 else 10*Self((n+1) div 2): n in [1..60]]; // Bruno Berselli, Mar 07 2013

CROSSREFS

Sequence in context: A094715 A213555 A096043 * A054841 A185076 A178643

Adjacent sequences:  A001199 A001200 A001201 * A001203 A001204 A001205

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Explanation (and correction) supplied by Jay Coskey (jmc(AT)tera.com) 8/97.

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 December 10 17:19 EST 2016. Contains 279005 sequences.