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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A083824 a(n) = digit reversal of 9*n, divided by 9. 6
 0, 1, 9, 8, 7, 6, 5, 4, 3, 2, 1, 11, 89, 79, 69, 59, 49, 39, 29, 19, 9, 109, 99, 78, 68, 58, 48, 38, 28, 18, 8, 108, 98, 88, 67, 57, 47, 37, 27, 17, 7, 107, 97, 87, 77, 56, 46, 36, 26, 16, 6, 106, 96, 86, 76, 66, 45, 35, 25, 15, 5, 105, 95, 85, 75, 65, 55, 34, 24, 14, 4, 104, 94, 84 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS If n is a multiple of 10, then a(n) = a(n/10); if n is not a multiple of 10, then a(a(n)) = n. LINKS Table of n, a(n) for n=0..73. EXAMPLE a(2) = reverse(9*2)/9 = reverse(18)/9 = 81/9 = 9. PROG (PARI) {for(n=0, 73, k=9*n; rev=0; while(k>0, d=divrem(k, 10); k=d[1]; rev=10*rev+d[2]); print1(rev/9, ", "))} (PARI) apply( {A083824(n)=fromdigits(Vecrev(digits(9*n)))/9}, [0..99]) \\ M. F. Hasler, May 21 2021 CROSSREFS Cf. A083822 (analog for 3), A083823, A083825. Sequence in context: A030076 A269667 A171816 * A087029 A104348 A251984 Adjacent sequences: A083821 A083822 A083823 * A083825 A083826 A083827 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 08 2003 EXTENSIONS Edited, corrected and extended by Klaus Brockhaus, May 11 2003 Minor edits and extension to offset 0 by M. F. Hasler, May 21 2021 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 May 30 10:33 EDT 2023. Contains 363050 sequences. (Running on oeis4.)