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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A100793 Beginning with 1, least natural number such that sum as well the difference of successive terms are both palindromes, otherwise 0 if no such term exists. 0
 1, 2, 3, 4, 5, 6, 105, 97, 64, 57, 54, 45, 43, 34, 32, 23, 21, 12, 10, 111, 212, 91, 80, 71, 60, 51, 48, 40, 37, 29, 26, 18, 15, 7, 0, 8, 14, 19, 25, 30, 36, 41, 47, 52, 49, 50, 61, 70, 81, 90, 101, 202, 191, 182, 171, 20, 13, 9, 0, 11, 22, 33, 44, 55, 46, 42, 35, 31, 24, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS EXAMPLE a(6)=105 since 105 + 6 = 111 and 105 - 6 = 99 both are palindromes and 105 is the least unused natural number for which this is true. a(34)=a(58)=a(69)=0 since no unused natural numbers exist. CROSSREFS Sequence in context: A037438 A171596 A318909 * A099145 A004868 A073788 Adjacent sequences:  A100790 A100791 A100792 * A100794 A100795 A100796 KEYWORD base,nonn AUTHOR Amarnath Murthy, Dec 04 2004 EXTENSIONS Edited, corrected and extended by Mark Hudson (mrmarkhudson(AT)hotmail.com) and Ray Chandler, Dec 06 2004 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 May 21 17:51 EDT 2022. Contains 353921 sequences. (Running on oeis4.)