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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A175438 Primes such that even and odd digits separately are in ascending order. 2
2, 3, 5, 7, 13, 17, 19, 23, 29, 37, 41, 43, 47, 59, 61, 67, 79, 83, 89, 103, 107, 109, 127, 137, 139, 149, 157, 163, 167, 179, 239, 241, 257, 263, 269, 281, 283, 307, 347, 349, 359, 367, 379, 389, 419, 439, 457, 461, 463, 467, 479, 487, 509, 547, 569, 587, 613 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

There are 910 such primes with a(910)=302547689=prime(16382892).

Indices of primes in A175439:

1,2,3,4,6,7,8,9,10,12,13,14,15,17,18,19,22,23,24,27,28,29,31,33,34,35,37,38.

LINKS

Zak Seidov, Table of n, a(n) for n = 1..910 (complete sequence)

CROSSREFS

Cf. A175439.

Sequence in context: A162950 A040972 A040161 * A040970 A216862 A040978

Adjacent sequences:  A175435 A175436 A175437 * A175439 A175440 A175441

KEYWORD

base,fini,full,nonn

AUTHOR

Zak Seidov, May 15 2010

STATUS

approved

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

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

Last modified November 21 11:17 EST 2014. Contains 249777 sequences.