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 A213217 Earliest string in {1,2,...9}* that is order-isomorphic to string formed by digits of n. 0
 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 21, 11, 12, 12, 12, 12, 12, 12, 12, 12, 21, 21, 11, 12, 12, 12, 12, 12, 12, 12, 21, 21, 21, 11, 12, 12, 12, 12, 12, 12, 21, 21, 21, 21, 11, 12, 12, 12, 12, 12, 21, 21, 21, 21, 21, 11, 12, 12, 12, 12, 21, 21, 21, 21, 21, 21, 11, 12, 12, 12, 21, 21, 21, 21, 21, 21, 21, 11, 12, 12, 21, 21, 21, 21, 21, 21, 21, 21, 11, 12, 21, 21, 21, 21, 21, 21, 21, 21, 21, 11, 211, 212, 213, 213, 213, 213, 213, 213, 213, 213, 221, 111, 112, 112, 112, 112, 112, 112, 112, 112 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,11 COMMENTS Well-defined for n < 1023456789 (i.e. until all ten digits appear in n). a(n) = n iff n = (10^k-1)/9 for some k<10. LINKS Table of n, a(n) for n=0..119. EXAMPLE 73307 is order-isomorphic to 32213, so a(73307) = 32213. a(n) = 1 for n <= 9; a(10)=21, a(11)=11, a(12)=...=a(19)=12, a(20)=21, ... CROSSREFS Sequence in context: A318648 A033341 A252629 * A300505 A086981 A114011 Adjacent sequences: A213214 A213215 A213216 * A213218 A213219 A213220 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Mar 02 2013 STATUS approved

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Last modified June 8 03:07 EDT 2023. Contains 363157 sequences. (Running on oeis4.)