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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A334389 Lexicographically earliest sequence of distinct positive integers such that the sum of [a(n) reversed] and [a(n+1) reversed] is a palindrome in base 10 (terms ending in zero permitted) 1
 1, 2, 3, 4, 5, 6, 10, 7, 18, 70, 20, 9, 29, 90, 31, 13, 42, 24, 53, 35, 64, 55, 11, 22, 33, 44, 75, 45, 21, 12, 32, 23, 43, 34, 54, 65, 56, 63, 8, 19, 80, 30, 14, 41, 25, 52, 36, 83, 16, 50, 27, 61, 38, 81, 39, 60, 17, 71, 28, 91, 74, 46, 73, 15, 40, 26, 51, 37, 62, 57, 66, 58, 67 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Terms ending in zero are permitted; when they are reversed, the leading zero(s) is (are) erased. LINKS Carole Dubois, Table of n, a(n) for n = 1..5001 EXAMPLE a(6) = 6 and a(7) = 10; the addition 6 + (0)1 is a palindrome (7). a(7) = 10 and a(8) = 7; the addition (0)1 + 7 is a palindrome (8). a(8) = 7 and a(9) = 18; the addition 7 + 81 is a palindrome (88). a(9) = 18 and a(10) = 70; the addition 81 + (0)7 is a palindrome (88). a(10) = 70 and a(11) = 20; the addition (0)7 + (0)2 is a palindrome (9). Etc. CROSSREFS Cf. A228730 (the sum of two consecutive terms is a palindrome in base 10). Sequence in context: A236689 A308719 A026266 * A075163 A333905 A143693 Adjacent sequences: A334386 A334387 A334388 * A334390 A334391 A334392 KEYWORD nonn,base,look AUTHOR Eric Angelini and Carole Dubois, Sep 28 2020 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 December 9 19:52 EST 2023. Contains 367693 sequences. (Running on oeis4.)