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

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2017 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A108324 "Binary prime squares": squares whose binary expansions, read as decimal expansions, are primes. 3
841, 1521, 2601, 2809, 4489, 7225, 7569, 11449, 18225, 32761, 35721, 55225, 64009, 88209, 123201, 140625, 143641, 198025, 201601, 243049, 339889, 358801, 375769, 491401, 511225, 525625, 546121, 561001, 591361, 609961, 690561, 707281, 717409, 727609, 848241 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Similar to A108323 but in base 10.

LINKS

Table of n, a(n) for n=1..35.

EXAMPLE

1521 = 39^2 is a term because 1521 = 10111110001_2 and the decimal number 10111110001 is prime.

MATHEMATICA

Select[Range[1000]^2, PrimeQ@ FromDigits@ IntegerDigits[#, 2] &] (* Giovanni Resta, Oct 03 2018 *)

CROSSREFS

Cf. A108322, A108323, A108325.

Sequence in context: A252780 A159690 A210470 * A133496 A253599 A121499

Adjacent sequences:  A108321 A108322 A108323 * A108325 A108326 A108327

KEYWORD

easy,nonn,base

AUTHOR

Alexandre Wajnberg, Jun 30 2005

EXTENSIONS

More terms from Giovanni Resta, Oct 03 2018

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 December 10 05:49 EST 2018. Contains 318044 sequences. (Running on oeis4.)