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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A020449 Primes that contain digits 0 and 1 only. 52
11, 101, 10111, 101111, 1011001, 1100101, 10010101, 10011101, 10100011, 10101101, 10110011, 10111001, 11000111, 11100101, 11110111, 11111101, 100100111, 100111001, 101001001, 101001011, 101100011, 101101111, 101111011, 101111111 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Primes which are the sums of distinct powers of 10. - Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 19 2002

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

CROSSREFS

Cf. A036952. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 31 2010]

Sequence in context: A064490 A080439 A098153 * A089971 A082620 A199304

Adjacent sequences:  A020446 A020447 A020448 * A020450 A020451 A020452

KEYWORD

nonn,base

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 02:48 EST 2012. Contains 205978 sequences.