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A081316 Lexicographically earliest sequence of positive integers such that n occurs a(n)-1 times, starting at n=1. 1
2, 3, 2, 1, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 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
1,1
LINKS
EXAMPLE
a(1)=2 because a(1)=1 would create a contradiction (1 would have appeared twice in the two sequences, not once). a(1)=2 implies that 1 appears once in this sequence; the first term that can equal 1 without creating a contradiction is a(4).
CROSSREFS
A081315 is the corresponding sequence for nonnegative integers, see also A001462.
Sequence in context: A319108 A349633 A238165 * A226362 A228549 A079893
KEYWORD
easy,nonn
AUTHOR
Matthew Vandermast, Mar 18 2003
EXTENSIONS
Definition edited by Benoit Jubin, May 01 2010
STATUS
approved

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Last modified March 28 16:58 EDT 2024. Contains 371254 sequences. (Running on oeis4.)