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 A318486 Lexicographically first sequence of different positive terms such that a(n) - [the first digit of a(n+1)] is a palindrome. 2
 1, 10, 2, 11, 3, 12, 4, 13, 5, 14, 6, 15, 7, 16, 8, 17, 9, 18, 70, 40, 71, 50, 60, 51, 72, 61, 62, 73, 74, 80, 30, 81, 41, 82, 52, 83, 63, 84, 75, 90, 20, 91, 31, 92, 42, 93, 53, 94, 64, 95, 78, 19, 85, 86, 96, 89, 100, 101, 23, 102, 34, 103, 24, 25, 35, 26, 45, 104, 36, 37, 46, 27, 56, 105, 47, 38, 57, 28, 67, 106, 58, 39 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Jean-Marc Falcoz, Table of n, a(n) for n = 1..10001 EXAMPLE The sequence starts with 1,10,2,11,3,12,4,13,5,14,6… and we see that [1 - (the first digit of 10 = 1)] is a palindrome (0); [10 - (the first digit of 2 = 2)] is a palindrome (8); [2 - (the first digit of 11 = 1)] is a palindrome (1); [11 - (the first digit of 3 = 3)] is a palindrome (8); etc. CROSSREFS Sequence in context: A111287 A255668 A187815 * A303850 A303848 A303783 Adjacent sequences:  A318483 A318484 A318485 * A318487 A318488 A318489 KEYWORD base,nonn,look AUTHOR Eric Angelini and Jean-Marc Falcoz, Aug 27 2018 STATUS approved

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Last modified July 29 17:41 EDT 2021. Contains 346346 sequences. (Running on oeis4.)