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!)
 A138902 a(n) = d!, where d is the number of digits in n. 4
 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 6, 6, 6 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,11 LINKS James Spahlinger, Table of n, a(n) for n = 0..10000 FORMULA a(n) = A000142(A055632(n)). - James Spahlinger, Oct 09 2012 PROG (Haskell) a138902 = a000142 . a055632 -- James Spahlinger, Oct 09 2012 CROSSREFS Different from A047726. Cf. A138908. Sequence in context: A055642 A348674 A276502 * A211668 A255270 A211670 Adjacent sequences:  A138899 A138900 A138901 * A138903 A138904 A138905 KEYWORD easy,nonn,base AUTHOR Odimar Fabeny, May 16 2008 EXTENSIONS Edited by N. J. A. Sloane, Sep 29 2011, at the suggestion of Franklin T. Adams-Watters 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 November 26 05:48 EST 2022. Contains 358353 sequences. (Running on oeis4.)