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 A081315 Lexicographically earliest sequence of positive integers such that n occurs a(n)-1 times, starting at n=0. 1
 1, 2, 3, 2, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS EXAMPLE a(2)=3 because 2 appears a total of 3 times in the two sequences: once in A001477, once as a(1) in this sequence and once as a(3). The number 2 cannot be chosen as a(2) because that would mark the third appearance of 2, creating a contradiction; neither a(2)=3 nor the subsequent a(3)=2 creates any contradiction, however. CROSSREFS Sequence for positive integers is A081316, see also A001462. Sequence in context: A168231 A235728 A205546 * A035662 A249870 A325404 Adjacent sequences:  A081312 A081313 A081314 * A081316 A081317 A081318 KEYWORD easy,nonn AUTHOR Matthew Vandermast, Mar 17 2003 EXTENSIONS Definition edited by Benoit Jubin, May 01 2010 STATUS approved

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