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 A210423 List the positions of all digits 9 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence. 14
 2, 9, 4, 90, 7, 91, 92, 13, 93, 17, 94, 21, 95, 25, 96, 29, 97, 28, 35, 98, 39, 99, 38, 40, 47, 900, 52, 901, 57, 902, 62, 903, 67, 904, 72, 905, 77, 906, 82, 907, 87, 908, 999, 9999, 9990, 104, 909, 106, 113, 910, 119, 911, 118, 128, 912, 134, 913, 139, 143 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS See A210415 for comments, links, and code. LINKS Danny Rorabaugh, Table of n, a(n) for n = 1..1000 EXAMPLE The sequence cannot start with 1 because the first digit is not 9. Let us start with 2: second digit equal to 9. The third digit cannot be 3 because the third digit is not 9. So let it be 4. In the next position we have now 90 because is the minimum number greater than 8 and starting with the digit 9. And so on. CROSSREFS Cf. A210414-A210422. Sequence in context: A268246 A268103 A127145 * A003725 A292952 A076930 Adjacent sequences:  A210420 A210421 A210422 * A210424 A210425 A210426 KEYWORD nonn,base AUTHOR Paolo P. Lava, Mar 26 2012 EXTENSIONS a(23)-a(26) corrected by Paolo P. Lava, Apr 17 2012 STATUS approved

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Last modified October 21 22:47 EDT 2019. Contains 328315 sequences. (Running on oeis4.)