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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A073925 Powers of 2 rearranged such that every partial sum (n>1) is composite. 1
1, 8, 16, 2, 64, 4, 256, 1024, 32, 128, 512, 2048, 8192, 4096, 16384, 32768, 131072, 65536, 2097152, 262144, 524288, 1048576, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 2147483648, 1073741824 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..32.

EXAMPLE

a(2)=8 because 1+2=3, 1+4=5 are primes and 1+8=9 is composite.

CROSSREFS

Cf. A073923, A073924.

Sequence in context: A061746 A028585 A073926 * A053321 A299214 A174256

Adjacent sequences:  A073922 A073923 A073924 * A073926 A073927 A073928

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Aug 19 2002

EXTENSIONS

More terms from Sascha Kurz, Feb 01 2003

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 23 08:18 EST 2019. Contains 320420 sequences. (Running on oeis4.)