This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A086947 Numbers k such that Reverse(k+9) = 3. 4
 21, 291, 2991, 29991, 299991, 2999991, 29999991, 299999991, 2999999991, 29999999991, 299999999991, 2999999999991, 29999999999991, 299999999999991, 2999999999999991, 29999999999999991, 299999999999999991 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Reverse(a(n)) = A086948(n). If k is in this sequence then Reverse(k) = (2/3)*k - 2. Also A101703 is the sequence of all numbers k such that Reverse(k) = (2/3)*k - 2. So this sequence is a subsequence of A101703. - Farideh Firoozbakht, Dec 30 2004 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..300 FORMULA a(n) = 3*(10^n - 3). MATHEMATICA Table[3*(10^n-3), {n, 17}] Table[FromDigits[PadRight[{3}, n, 0]], {n, 2, 20}]-9 (* Harvey P. Dale, Nov 27 2012 *) PROG (MAGMA) [3*(10^n-3): n in [1..25] ]; // Vincenzo Librandi, Aug 22 2011 CROSSREFS Cf. A085331, A086948, A101700, A101703. Sequence in context: A183731 A101703 A102018 * A230768 A230021 A101700 Adjacent sequences:  A086944 A086945 A086946 * A086948 A086949 A086950 KEYWORD nonn,base AUTHOR Ray Chandler, Jul 24 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 December 15 11:43 EST 2019. Contains 329999 sequences. (Running on oeis4.)