The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A090272 Take each palindrome ending in 1, 3, 7, or 9 and find smallest prime formed by the digits of that palindrome, followed by a string of digits, followed by the palindrome again. 2
 11, 313, 727, 919, 11311, 33533, 77377, 990599, 10101101, 1114111, 1212121, 1311131, 1411141, 1513151, 1611161, 1712171, 18102181, 1917191, 30301303, 3135313, 3233323, 3331333, 3439343, 35301353, 3635363, 3732373, 3836383 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE Prime pertaining to 11 is 11311 and that pertaining to 99 is 990599. CROSSREFS Cf. A090270, A090272. Sequence in context: A060495 A251589 A070278 * A090271 A267753 A233241 Adjacent sequences:  A090269 A090270 A090271 * A090273 A090274 A090275 KEYWORD base,nonn AUTHOR Amarnath Murthy, Nov 28 2003 EXTENSIONS More terms from Joshua Zucker, May 03 2006 STATUS approved

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

Last modified June 25 18:38 EDT 2022. Contains 354851 sequences. (Running on oeis4.)