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 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A023746 Plaindromes: numbers whose digits in base 4 are in nondecreasing order. 5
 0, 1, 2, 3, 5, 6, 7, 10, 11, 15, 21, 22, 23, 26, 27, 31, 42, 43, 47, 63, 85, 86, 87, 90, 91, 95, 106, 107, 111, 127, 170, 171, 175, 191, 255, 341, 342, 343, 346, 347, 351, 362, 363, 367, 383, 426, 427, 431, 447, 511, 682, 683, 687, 703, 767, 1023, 1365, 1366 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..500 MATHEMATICA Select[Range[0, 1366], LessEqual@@IntegerDigits[#, 4]&] (* Ray Chandler, Jan 06 2014 *) CROSSREFS Sequence in context: A032851 A102830 A031989 * A357425 A090034 A037016 Adjacent sequences: A023743 A023744 A023745 * A023747 A023748 A023749 KEYWORD nonn,base,easy AUTHOR Olivier Gérard EXTENSIONS Offset set to 1 by Ray Chandler, Jan 06 2014 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 9 02:18 EST 2023. Contains 367681 sequences. (Running on oeis4.)