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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A163491 A fractal sequence (if we delete the first occurence of n we get the sequence itself). 0
1, 1, 1, 2, 1, 2, 3, 1, 2, 4, 3, 1, 5, 2, 4, 6, 3, 1, 7, 5, 2, 8, 4, 6, 9, 3, 1, 10, 7, 5, 11, 2, 8, 12, 4, 6, 13, 9, 3, 14, 1, 10, 15, 7, 5, 16, 11, 2, 17, 8, 12, 18, 4, 6, 19, 13, 9, 20, 3, 14, 21, 1, 10, 22, 15, 7, 23, 5, 16, 24, 2, 6, 11, 15, 20, 24 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

COMMENTS

Write the natural integers this way: 1...2...3...4...5...6...7....and fill undefined places with the sequence itself. A003602 is obtained by starting from 1..2..3..4..5..6....

FORMULA

a(3n-2)=n

EXAMPLE

1...2...3...4....-->1.1..2...3...4....-->1.1.1.2...3...4....-->1.1.1.2...3...4....-->1.1.1.2.1..3...4....-->1.1.1.2.1.2.3...4....-->1.1.1.2.1.2.3.1..4....-->1.1.1.2.1.2.3.1.2.4....

CROSSREFS

Cf. A003602

Sequence in context: A194917 A194914 A195076 * A080772 A145111 A104795

Adjacent sequences:  A163488 A163489 A163490 * A163492 A163493 A163494

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Jul 29 2009

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 21:13 EST 2012. Contains 206085 sequences.