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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A088435 1/2 + half of the (n+1)-st component of the continued fraction expansion of sum(k>=1,1/3^(2^k)). 1
3, 2, 2, 1, 2, 3, 2, 1, 3, 2, 1, 2, 2, 3, 2, 1, 3, 2, 2, 1, 2, 3, 1, 2, 3, 2, 1, 2, 2, 3, 2, 1, 3, 2, 2, 1, 2, 3, 2, 1, 3, 2, 1, 2, 2, 3, 1, 2, 3, 2, 2, 1, 2, 3, 1, 2, 3, 2, 1, 2, 2, 3, 2, 1, 3, 2, 2, 1, 2, 3, 2, 1, 3, 2, 1, 2, 2, 3, 2, 1, 3, 2, 2, 1, 2, 3, 1, 2, 3, 2, 1, 2, 2, 3, 1, 2, 3, 2, 2, 1, 2, 3, 2, 1, 3 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

To construct the sequence use the rule : a(1)=3, then a(a(1)+a(2)+...+a(n)+1)=2+(-1)^n and fill in any undefined place with 2.

FORMULA

a(n)=(1/2)*(1+A004200(n+1)); a(a(1)+a(2)+...+a(n)+1)=2+(-1)^n

EXAMPLE

Example to illustrate the comment : a(a(1)+1)=a(4)=2+(-1)^1=1 and a(2), a(3) are undefined. The rule forces a(2)=a(3)=2.

CROSSREFS

Cf. A088431.

Sequence in context: A152159 A090341 A175632 * A171900 A204257 A074976

Adjacent sequences:  A088432 A088433 A088434 * A088436 A088437 A088438

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 08 2003 Ben.

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

Content is available under The OEIS End-User License Agreement .

Last modified February 17 12:32 EST 2012. Contains 206016 sequences.