The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 10 02:09 EST 2022. Contains 358712 sequences. (Running on oeis4.)