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!)
 A161597 Numbers such that TITO(n) = n, where TITO(n) = A161594(n). 9
 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 17, 19, 22, 23, 26, 29, 31, 33, 37, 39, 41, 43, 44, 46, 47, 53, 55, 59, 61, 62, 66, 67, 69, 71, 73, 77, 79, 82, 83, 86, 88, 89, 93, 97, 99, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 143, 149, 151, 157, 163, 167, 169, 173, 179 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS TITO(p) = p, for any prime p. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 T. Khovanova, Turning Numbers Inside Out [From Tanya Khovanova, Jul 07 2009] MATHEMATICA reversepower[{n_, k_}] := FromDigits[Reverse[IntegerDigits[n]]]^k f[n_] := FromDigits[ Reverse[IntegerDigits[Times @@ Map[reversepower, FactorInteger[n]]]]] Select[Range[200], f[ # ] == # &] PROG (Haskell) a161597 n = a161597_list !! (n-1) a161597_list = filter (\x -> a161594 x == x) [1..] -- Reinhard Zumkeller, Oct 14 2011 (PARI) is(n)={n==A161594(n)} \\ M. F. Hasler, May 11 2015 CROSSREFS Complement of A161598; nonprimes: A161600. Sequence in context: A165209 A072227 A122427 * A320320 A263364 A296242 Adjacent sequences: A161594 A161595 A161596 * A161598 A161599 A161600 KEYWORD nonn,base AUTHOR J. H. Conway & Tanya Khovanova, Jun 14 2009 EXTENSIONS Edited by N. J. A. Sloane, Jun 23 2009 Offset corrected by Reinhard Zumkeller, Oct 14 2011 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 December 7 04:29 EST 2022. Contains 358649 sequences. (Running on oeis4.)