This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A086578 a(n) = k where R(k+7)=7. 8
 0, 63, 693, 6993, 69993, 699993, 6999993, 69999993, 699999993, 6999999993, 69999999993, 699999999993, 6999999999993, 69999999999993, 699999999999993, 6999999999999993, 69999999999999993, 699999999999999993 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS a(n) = 7*9*A002275(n) = 7*A002283(n) R(a(n))=A086575(n) One of family of sequences of form a(n)=k, where R(k+m)=m, m=1 to 9; m=1: A002283, m=2: A086573, m=3: A086574, m=4: A086575, m=5: A086576, m=6: A086577, m=7: A086578, m=8: A086579, m=9: A086580. LINKS FORMULA a(n) = 7*(10^n-1) From Chai Wah Wu, Jul 08 2016: (Start) a(n) = 11*a(n-1) - 10*a(n-2) for n > 1. G.f.: 63*x/((1 - x)*(1 - 10*x)). (End) CROSSREFS Sequence in context: A152731 A090028 A152725 * A198399 A221968 A115152 Adjacent sequences:  A086575 A086576 A086577 * A086579 A086580 A086581 KEYWORD nonn AUTHOR Ray Chandler, Jul 22 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 18 13:25 EDT 2019. Contains 326100 sequences. (Running on oeis4.)