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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A083811 Numbers n such that 2n+1 is the digit reversal of n+1. 5
 36, 396, 3996, 39996, 399996, 3999996, 39999996, 399999996, 3999999996, 39999999996, 399999999996, 3999999999996 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 1. a(n) = 36 + 360 + 3600+ ...+ up to n terms. a(n) = sum of n terms of the geometric progression with the first term 36 and common ratio 10. 2. a(n) = 36*A000042(n).( the unary sequence). LINKS Table of n, a(n) for n=1..12. FORMULA a(n) = 4*(10^n - 1). EXAMPLE 36 + 1 = 37, 2*36 + 1 = 73. CROSSREFS Cf. A000042. Sequence in context: A160280 A307959 A095682 * A086575 A203027 A164583 Adjacent sequences: A083808 A083809 A083810 * A083812 A083813 A083814 KEYWORD base,nonn AUTHOR Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 08 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 June 2 22:56 EDT 2023. Contains 363102 sequences. (Running on oeis4.)