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!)
 A087392 a(1) = 1, a(n) = smallest multiple of n beginning with the digit reversal of a(n-1). 0
 1, 10, 12, 212, 2120, 2124, 42126, 621240, 421263, 3621240, 4212637, 73621248, 842126376, 67362124802, 2084212637610, 16736212480208, 802084212637617, 7167362124802086, 680208421263761709, 9071673621248020860 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA a(n) = n*ceiling((1/n)*reverse(a(n-1))*10^f(n)) where f(n) starts out practically always 1 or 2 and reaches higher values extremely slowly. - Sam Alexander, Nov 15 2003 EXAMPLE a(6) = 2124; a(7) = 42126, which begins with the digit reversal of 2124. CROSSREFS Sequence in context: A219213 A078217 A178639 * A255534 A262422 A248336 Adjacent sequences: A087389 A087390 A087391 * A087393 A087394 A087395 KEYWORD base,nonn AUTHOR Amarnath Murthy, Sep 09 2003 EXTENSIONS More terms from Sam Alexander, Nov 15 2003 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 30 08:01 EST 2022. Contains 358435 sequences. (Running on oeis4.)