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!)
A075378 Rearrangement of natural numbers with a(1) = 1, a(2n) squarefree and a(2n+1) not squarefree. 2
1, 2, 4, 3, 8, 5, 9, 6, 12, 7, 16, 10, 18, 11, 20, 13, 24, 14, 25, 15, 27, 17, 28, 19, 32, 21, 36, 22, 40, 23, 44, 26, 45, 29, 48, 30, 49, 31, 50, 33, 52, 34, 54, 35, 56, 37, 60, 38, 63, 39, 64, 41, 68, 42, 72, 43, 75, 46, 76, 47, 80, 51, 81, 53, 84, 55, 88, 57, 90, 58, 92, 59 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
PROG
(PARI) print1(1, ", "); p1=2; p2=4; for(i=2, 100, if(i%2==0, while(!issquarefree(p1), p1++); print1(p1, ", "); p1++, while(issquarefree(p2), p2++); print1(p2, ", "); p2++)) - Lambert Herrgesell (zero815(AT)googlemail.com), Mar 09 2006
CROSSREFS
Sequence in context: A246365 A331585 A191729 * A101905 A297075 A306458
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Sep 22 2002
EXTENSIONS
More terms from Lambert Herrgesell (zero815(AT)googlemail.com), Mar 09 2006
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 02:51 EDT 2024. Contains 370952 sequences. (Running on oeis4.)