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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A213367 Numbers that are not squares of primes. 2
1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers n such that A000005(n)<> 3.

First differs from A175084 at a(29).

LINKS

Table of n, a(n) for n=1..66.

EXAMPLE

4 is not in the sequence because 4 as three divisors: 1, 2, 4.

CROSSREFS

Complement of A001248. Column 3 of A210976.

Cf. A000005, A018252, A175084, A210994.

Sequence in context: A039122 A031975 A028729 * A175084 A171519 A072099

Adjacent sequences:  A213364 A213365 A213366 * A213368 A213369 A213370

KEYWORD

nonn,easy

AUTHOR

Omar E. Pol, Aug 11 2012

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 25 03:40 EST 2018. Contains 299630 sequences. (Running on oeis4.)