The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A074108 Smallest number such that the concatenation of first n terms is a proper multiple of the concatenation of first n natural numbers. 0
 2, 4, 6, 8, 13585, 81504, 959339, 3715372, 78137091, 2037878170, 861472331456, 35628332614704, 2509243979641006, 97463093398309010, 52748900893862397840, 7355609995400651988940, 1755796374216684779591144, 71520859355651043708177774 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Table of n, a(n) for n=0..17. EXAMPLE 24 = 8*12, 246 = 2*123, 2468= 2*1234, 246813585 = 19993*12345 and 246813585 is a concatenation of first five terms. CROSSREFS Sequence in context: A030149 A083146 A306091 * A231408 A361973 A021409 Adjacent sequences: A074105 A074106 A074107 * A074109 A074110 A074111 KEYWORD base,nonn AUTHOR Amarnath Murthy, Aug 26 2002 EXTENSIONS Corrected and extended by Max Alekseyev, May 11 2009 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 June 12 14:10 EDT 2024. Contains 373331 sequences. (Running on oeis4.)