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 A210420 List the positions of all digits 6 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence. 4
 2, 6, 4, 60, 61, 9, 62, 13, 63, 16, 19, 64, 23, 65, 26, 29, 66, 30, 35, 67, 39, 68, 43, 69, 46, 49, 600, 54, 601, 59, 666, 6666, 66660, 73, 602, 78, 603, 83, 604, 88, 605, 93, 606, 95, 101, 607, 106, 110, 608, 116, 609, 115, 125, 610, 131, 611, 136, 140, 612 (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 6. Let us start with 2: second digit equal to 6. The third digit cannot be 3 because the third digit is not 6. So let it be 4. In the next position we have now 60 because is the minimum number greater than 6 and starting with the digit 6. And so on. CROSSREFS Cf. A210414-A210423 Sequence in context: A080499 A072513 A022404 * A306585 A118138 A240023 Adjacent sequences:  A210417 A210418 A210419 * A210421 A210422 A210423 KEYWORD nonn,base AUTHOR Paolo P. Lava, Mar 26 2012 STATUS approved

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Last modified October 20 22:44 EDT 2019. Contains 328291 sequences. (Running on oeis4.)