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 A036233 Inverse Colombian function. 0
 1, 1, 3, 1, 5, 3, 7, 1, 9, 5, 5, 3, 5, 7, 3, 1, 5, 9, 7, 20, 3, 20, 1, 3, 5, 20, 9, 1, 7, 3, 31, 5, 3, 20, 31, 9, 5, 1, 3, 7, 20, 42, 31, 7, 9, 20, 5, 42, 1, 31, 3, 7, 53, 9, 31, 20, 3, 5, 7, 42, 53, 1, 9, 64, 31, 42, 20, 53, 3, 1, 5, 9, 7, 64, 75, 31, 1, 42, 5, 20, 9, 53, 7, 3, 64, 86, 75, 20 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Contains only self-numbers, see A003052. LINKS FORMULA a(n) = smallest x with n in the digit summing sequence starting with x CROSSREFS Cf. A004207, A016052, A007618, A006507, A016052. Sequence in context: A161825 A099551 A211206 * A145799 A244568 A325401 Adjacent sequences:  A036230 A036231 A036232 * A036234 A036235 A036236 KEYWORD easy,nonn,base AUTHOR Miklos SZABO (mike(AT)ludens.elte.hu) STATUS approved

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Last modified December 13 06:26 EST 2019. Contains 329968 sequences. (Running on oeis4.)