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

 

Logo

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A046338 Palindromes with an even number of prime factors (counted with multiplicity). 3
4, 6, 9, 22, 33, 55, 77, 88, 111, 121, 141, 161, 202, 232, 262, 303, 323, 393, 414, 424, 444, 454, 484, 505, 515, 525, 535, 545, 565, 585, 626, 636, 666, 676, 686, 707, 717, 737, 767, 808, 818, 838, 858, 868, 878, 898, 939, 949, 959, 979, 989, 999, 1111, 1441 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

John Cerkan, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A028260, A046337.

Sequence in context: A239307 A137253 A035135 * A118690 A084994 A046328

Adjacent sequences:  A046335 A046336 A046337 * A046339 A046340 A046341

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jun 15 1998

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 August 19 13:00 EDT 2017. Contains 290807 sequences.