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 A181664 Let f(m) = number of steps needed to reach a Harshad number when the map k->A062028(l) is iterated starting at m; a(n) = smallest m such that f(m) = n. 2
 15, 19, 14, 28, 23, 16, 22, 65, 55, 142, 134, 130, 119, 109, 95, 79, 71, 58, 47, 37, 32, 25, 17, 13, 11, 44, 256, 245, 235, 815, 1313, 1489, 1469, 1510, 1493, 1480, 1829, 1828, 1814, 1789, 1772, 3115, 4295, 4276, 4262, 4246, 4229, 4216, 4196, 4177, 4163, 4147, 4183, 4166, 4153, 4142, 4132, 4118, 4111, 4094, 4081, 8914, 8885, 8857, 8834, 8809, 8783, 8761, 8741, 8722, 8699, 8674, 8648, 8626, 8597, 8569, 8546, 8530, 8513, 8491, 8471, 8452, 8429, 8413, 8387, 8365, 8345, 8326, 8312, 8287, 8270, 8248, 8228, 8209, 8186, 8170, 8153, 8140, 31085, 31072 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Terms were computed by D. S. McNeil, Claudio Meller and Hans Havermann. REFERENCES Eric Angelini, Posting to Sequence Fans Mailing List, Sep 20 2010 LINKS Table of n, a(n) for n=1..100. Eric Angelini, Chasing base-10 Harshad numbers E. Angelini, Chasing base-10 Harshad numbers [Cached copy, with permission] Hans Havermann, Steps to reach a Harshad CROSSREFS Cf. A062028, A005349, A181614. Sequence in context: A220787 A167322 A217406 * A348517 A224535 A225861 Adjacent sequences: A181661 A181662 A181663 * A181665 A181666 A181667 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Nov 18 2010 STATUS approved

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Last modified September 19 12:50 EDT 2024. Contains 376012 sequences. (Running on oeis4.)