login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A075567 Rearrangement of natural numbers by choosing alternately odd and even numbers such that every partial sum is composite. 1
9, 6, 1, 2, 3, 4, 5, 8, 7, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(n) = n for n > 9.
LINKS
PROG
(PARI) a(n)=if(n>9, n, [9, 6, 1, 2, 3, 4, 5, 8, 7][n]) \\ Charles R Greathouse IV, Sep 02 2011
CROSSREFS
Cf. A075566.
Sequence in context: A011114 A298243 A020783 * A019883 A085574 A194825
KEYWORD
nonn,easy
AUTHOR
Amarnath Murthy, Sep 25 2002
EXTENSIONS
Extended by Ray Chandler, Feb 13 2005
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 19 06:53 EDT 2024. Contains 370953 sequences. (Running on oeis4.)